Fix secondary links default value and types (#8532)

Fixes broken companies view

packages/twenty-server/src/engine/metadata-modules/field-metadata/dtos/default-value.input.ts

@@ -31,7 +31,7 @@ export class FieldMetadataDefaultValueString {
 
 export class FieldMetadataDefaultValueRawJson {
   @ValidateIf((_object, value) => value !== null)
-  @IsObject()
+  @IsObject() // TODO: Should this also allow arrays?
   value: object | null;
 }
 
@@ -137,6 +137,14 @@ export class FieldMetadataDefaultValueAddress {
   addressLng: number | null;
 }
 
+class LinkMetadata {
+  @IsString()
+  label: string;
+
+  @IsString()
+  url: string;
+}
+
 export class FieldMetadataDefaultValueLinks {
   @ValidateIf((_object, value) => value !== null)
   @IsQuotedString()
@@ -147,8 +155,8 @@ export class FieldMetadataDefaultValueLinks {
   primaryLinkUrl: string | null;
 
   @ValidateIf((_object, value) => value !== null)
-  @IsObject()
-  secondaryLinks: object | null;
+  @IsArray()
+  secondaryLinks: LinkMetadata[] | null;
 }
 
 export class FieldMetadataDefaultActor {