Update group chat metadata format (#4805)

* Migrate group metadata to group chat files

* Skip migration if chat already has metadata

* Fix active group not being set on group conversion

* Improve types in createGroup

* Fix padding in hotswap group avatars

* Fix centering of empty hotswap avatar

* Added automatic backups of migrated data

* Fix 'OVERWRITE' for GC

* Fix metadata parsing order in migration

* Remove color accents from regular migration logs

* Always set gen_id in converted message

* Clone messages before conversion

* Reduce size of add/remove buttons

* Fix group chat file size calculation

public/scripts/extensions/gallery/index.js

@@ -95,7 +95,7 @@ function initSettings() {
 
 /**
  * Retrieves the gallery folder for a given character.
- * @param {import('../../char-data.js').v1CharData} char Character data
+ * @param {Character} char Character data
  * @returns {string} The gallery folder for the character
  */
 function getGalleryFolder(char) {