File storage cleaning (#18381)

- Remove feature flag
- Remove legacy methods in file-upload and file-service
- Migrate AI Chat to new file management

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/modules/object-record/utils/getRecordChipGenerators.ts

@@ -17,7 +17,6 @@ import { FieldMetadataType } from '~/generated-metadata/graphql';
 export const getRecordChipGenerators = (
   objectMetadataItems: ObjectMetadataItem[],
   allowRequestsToTwentyIcons?: boolean,
-  isFilesFieldMigrated?: boolean,
 ) => {
   const chipGeneratorPerObjectPerField: ChipGeneratorPerObjectNameSingularPerFieldName =
     {};
@@ -95,7 +94,6 @@ export const getRecordChipGenerators = (
                   record,
                   imageIdentifierFieldMetadataToUse,
                   allowRequestsToTwentyIcons,
-                  isFilesFieldMigrated,
                 ),
                 avatarType,
                 isLabelIdentifier,