[CHORE] Avoid isDefined duplicated reference, move it to twenty-shared (#9967)

# Introduction
Avoid having multiple `isDefined` definition across our pacakges
Also avoid importing `isDefined` from `twenty-ui` which exposes a huge
barrel for a such little util function

## In a nutshell
Removed own `isDefined.ts` definition from `twenty-ui` `twenty-front`
and `twenty-server` to move it to `twenty-shared`.
Updated imports for each packages, and added explicit dependencies to
`twenty-shared` if not already in place

Related PR https://github.com/twentyhq/twenty/pull/9941

packages/twenty-chrome-extension/src/contentScript/createButton.ts

@@ -1,4 +1,4 @@
-import { isDefined } from '~/utils/isDefined';
+import { isDefined } from 'twenty-shared';
 
 interface CustomDiv extends HTMLDivElement {
   onClickHandler: (newHandler: () => void) => void;

packages/twenty-chrome-extension/src/contentScript/extractCompanyProfile.ts

@@ -1,10 +1,10 @@
+import { isDefined } from 'twenty-shared';
 import { createDefaultButton } from '~/contentScript/createButton';
 import changeSidePanelUrl from '~/contentScript/utils/changeSidepanelUrl';
 import extractCompanyLinkedinLink from '~/contentScript/utils/extractCompanyLinkedinLink';
 import extractDomain from '~/contentScript/utils/extractDomain';
 import { createCompany, fetchCompany } from '~/db/company.db';
 import { CompanyInput } from '~/db/types/company.types';
-import { isDefined } from '~/utils/isDefined';
 
 export const checkIfCompanyExists = async () => {
   const { tab: activeTab } = await chrome.runtime.sendMessage({

packages/twenty-chrome-extension/src/contentScript/extractPersonProfile.ts

@@ -1,9 +1,9 @@
+import { isDefined } from 'twenty-shared';
 import { createDefaultButton } from '~/contentScript/createButton';
 import changeSidePanelUrl from '~/contentScript/utils/changeSidepanelUrl';
 import extractFirstAndLastName from '~/contentScript/utils/extractFirstAndLastName';
 import { createPerson, fetchPerson } from '~/db/person.db';
 import { PersonInput } from '~/db/types/person.types';
-import { isDefined } from '~/utils/isDefined';
 
 export const checkIfPersonExists = async () => {
   const { tab: activeTab } = await chrome.runtime.sendMessage({

packages/twenty-chrome-extension/src/contentScript/index.ts

@@ -1,6 +1,6 @@
+import { isDefined } from 'twenty-shared';
 import { insertButtonForCompany } from '~/contentScript/extractCompanyProfile';
 import { insertButtonForPerson } from '~/contentScript/extractPersonProfile';
-import { isDefined } from '~/utils/isDefined';
 
 // Inject buttons into the DOM when SPA is reloaded on the resource url.
 // e.g. reload the page when on https://www.linkedin.com/in/mabdullahabaid/

packages/twenty-chrome-extension/src/contentScript/insertSettingsButton.ts

@@ -1,4 +1,4 @@
-import { isDefined } from '~/utils/isDefined';
+import { isDefined } from 'twenty-shared';
 
 const btn = document.getElementById('twenty-settings-btn');
 if (!isDefined(btn)) {

packages/twenty-chrome-extension/src/contentScript/utils/changeSidepanelUrl.ts

@@ -1,4 +1,4 @@
-import { isDefined } from '~/utils/isDefined';
+import { isDefined } from 'twenty-shared';
 
 const changeSidePanelUrl = async (url: string) => {
   if (isDefined(url)) {

packages/twenty-chrome-extension/src/contentScript/utils/extractCompanyLinkedinLink.ts

@@ -1,6 +1,6 @@
 // Extract "https://www.linkedin.com/company/twenty/" from any of the following urls, which the user can visit while on the company page.
 
-import { isDefined } from '~/utils/isDefined';
+import { isDefined } from 'twenty-shared';
 
 // "https://www.linkedin.com/company/twenty/" "https://www.linkedin.com/company/twenty/about/" "https://www.linkedin.com/company/twenty/people/".
 const extractCompanyLinkedinLink = (activeTabUrl: string) => {