fix: Enable Lingui recommended rules and fix all translation violations (#14133)

- Enable lingui/no-single-variables-to-translate and all other
recommended Lingui rules
- Fix single variable translation patterns (t`${variable}` → variable)
- Fix expression-in-message violations by extracting variables
- Fix t-call-in-function violations by moving translations inside
functions
- Update ESLint configs to use linguiPlugin.configs['flat/recommended']
- Clean up unused imports and improve translation patterns

packages/twenty-server/src/engine/metadata-modules/flat-object-metadata/validators/utils/validate-flat-object-metadata-label.util.ts

@@ -1,4 +1,4 @@
-import { t } from '@lingui/core/macro';
+import { msg, t } from '@lingui/core/macro';
 
 import { type FlatObjectMetadataValidationError } from 'src/engine/metadata-modules/flat-object-metadata/types/flat-object-metadata-validation-error.type';
 import { type FlatObjectMetadata } from 'src/engine/metadata-modules/flat-object-metadata/types/flat-object-metadata.type';
@@ -20,11 +20,11 @@ export const validateFlatObjectMetadataLabel = ({
   const validators: FlatMetadataValidator<string>[] = [
     {
       validator: (label) => beneathDatabaseIdentifierMinimumLength(label),
-      message: t`Object label is too short`,
+      message: msg`Object label is too short`,
     },
     {
       validator: (label) => exceedsDatabaseIdentifierMaximumLength(label),
-      message: t`Object label is too long`,
+      message: msg`Object label is too long`,
     },
   ];
 
@@ -43,8 +43,8 @@ export const validateFlatObjectMetadataLabel = ({
   if (labelsAreIdentical) {
     errors.push({
       code: ObjectMetadataExceptionCode.INVALID_OBJECT_INPUT,
-      userFriendlyMessage: `The singular and plural labels cannot be the same for an object`,
-      message: t`The singular and plural labels cannot be the same for an object`,
+      message: `The singular and plural labels cannot be the same for an object`,
+      userFriendlyMessage: t`The singular and plural labels cannot be the same for an object`,
       value: labelSingular,
     });
   }