contact creation was recreating a primaryemail du to casing (#11042)

a first step to fix some of the issues i notices in grafana for netzero

in grafana, we log this error :  
```
error: error: duplicate key value violates unique constraint "IDX_UNIQUE_87914cd3ce963115f8cb943e2ac"

query failed: INSERT INTO "workspace_20fjk7nksxxxxxxxxxxx"."person"("cdrOpportunityId", "siteOpportunityId", "xLinkPrimaryLinkLabel", "xLinkPrimaryLinkUrl", "xLinkSecondaryLinks", "linkedinLinkPrimaryLinkLabel", "linkedinLinkPrimaryLinkUrl", "linkedinLinkSecondaryLinks", "emailsPrimaryEmail", "emailsAdditionalEmails", "companyId", "deletedAt", "position", "phonesPrimaryPhoneNumber", "phonesPrimaryPhoneCountryCode", "phonesPrimaryPhoneCallingCode", "phonesAdditionalPhones", "createdAt", "id", "searchVector", "avatarUrl", "city", "jobTitle", "nameFirstName", "nameLastName", "updatedAt", "createdBySource", "createdByWorkspaceMemberId", "createdByName", "createdByContext") VALUES (DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $1, $2, $3, DEFAULT, $4, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $5, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $6, $7, DEFAULT, $8, $9, $10, $11), (DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $12, $13, $14, DEFAULT, $15, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $16, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $17, $18, DEFAULT, $19, $20, $21, $22), (DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $23, $24, $25, DEFAULT, $26, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $27, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $28, $29, DEFAULT, $30, $31, $32, $33), (DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $34, $35, $36, DEFAULT, $37, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $38, DEFAULT, DEFAULT, DEFAULT, DEFAULT, $39, $40, DEFAULT, $41, $42, $43, $44) RETURNING "xLinkPrimaryLinkLabel", "xLinkPrimaryLinkUrl", "xLinkSecondaryLinks", "linkedinLinkPrimaryLinkLabel", "linkedinLinkPrimaryLinkUrl", "linkedinLinkSecondaryLinks", "emailsPrimaryEmail", "emailsAdditionalEmails", "companyId", "deletedAt", "position", "phonesPrimaryPhoneNumber", "phonesPrimaryPhoneCountryCode", "phonesPrimaryPhoneCallingCode", "phonesAdditionalPhones", "createdAt", "id", "searchVector", "avatarUrl", "city", "jobTitle", "nameFirstName", "nameLastName", "updatedAt", "createdBySource", "createdByWorkspaceMemberId", "createdByName", "createdByContext" 
```
The index is related to the People table on the netzero workspace
schema. When I looked at the email trying to be inserted, it contains
captial letters. I looked at the DB and there are existing small caps
emails. That's why my guess it that the failure comes from the contact
creation service.

Intersting fact, it comes from the CALENDAR source, not the email one.
That's why i added a little bit of error logging in case it reproduces
itself

packages/twenty-server/src/modules/calendar/calendar-event-import-manager/services/calendar-event-import-exception-handler.service.ts

@@ -85,7 +85,10 @@ export class CalendarEventImportErrorHandlerService {
         workspaceId,
       );
 
-      return;
+      throw new CalendarEventImportException(
+        `Unknown temporary error occurred while importing calendar events for calendar channel ${calendarChannel.id} in workspace ${workspaceId} with throttleFailureCount${calendarChannel.throttleFailureCount}`,
+        CalendarEventImportExceptionCode.UNKNOWN,
+      );
     }
 
     const calendarChannelRepository =

packages/twenty-server/src/modules/contact-creation-manager/services/create-company-and-contact.service.ts

@@ -84,13 +84,14 @@ export class CreateCompanyAndContactService {
     });
 
     const alreadyCreatedContactEmails: string[] = alreadyCreatedContacts?.map(
-      ({ emails }) => emails?.primaryEmail,
+      ({ emails }) => emails?.primaryEmail?.toLowerCase(),
     );
 
     const filteredContactsToCreate = uniqueContacts.filter(
       (participant) =>
-        !alreadyCreatedContactEmails.includes(participant.handle) &&
-        participant.handle.includes('@'),
+        !alreadyCreatedContactEmails.includes(
+          participant.handle.toLowerCase(),
+        ) && participant.handle.includes('@'),
     );
 
     const filteredContactsToCreateWithCompanyDomainNames =

packages/twenty-server/src/modules/contact-creation-manager/services/create-contact.service.ts

@@ -51,7 +51,10 @@ export class CreateContactService {
 
       return {
         id,
-        emails: { primaryEmail: handle, additionalEmails: null },
+        emails: {
+          primaryEmail: handle.toLowerCase(),
+          additionalEmails: null,
+        },
         name: {
           firstName,
           lastName,

packages/twenty-server/src/modules/messaging/message-import-manager/services/messaging-messages-import.service.ts

@@ -146,7 +146,7 @@ export class MessagingMessagesImportService {
         blocklist.map((blocklistItem) => blocklistItem.handle),
       );
 
-      await this.saveMessagesAndEnqueueContactCreationService.saveMessagesAndEnqueueContactCreationJob(
+      await this.saveMessagesAndEnqueueContactCreationService.saveMessagesAndEnqueueContactCreation(
         messagesToSave,
         messageChannel,
         connectedAccount,

packages/twenty-server/src/modules/messaging/message-import-manager/services/messaging-save-messages-and-enqueue-contact-creation.service.ts

@@ -36,7 +36,7 @@ export class MessagingSaveMessagesAndEnqueueContactCreationService {
     private readonly twentyORMManager: TwentyORMManager,
   ) {}
 
-  async saveMessagesAndEnqueueContactCreationJob(
+  async saveMessagesAndEnqueueContactCreation(
     messagesToSave: MessageWithParticipants[],
     messageChannel: MessageChannelWorkspaceEntity,
     connectedAccount: ConnectedAccountWorkspaceEntity,