fixed several runtime errors from client error reports

lib/widget/avatar_actions_sheet.dart

@@ -42,7 +42,7 @@ Future<AvatarSheetResult?> showAvatarActionsSheet(
         onTap: () async {
           final bytes = await _pickAndCrop(
             sheetContext,
-            () => FilePick.singleGalleryPick(sheetContext),
+            () => FilePick.singleGalleryPick(sheetContext, forCrop: true),
           );
           if (bytes == null || !sheetContext.mounted) return;
           result = AvatarUploadResult(bytes);
@@ -55,7 +55,7 @@ Future<AvatarSheetResult?> showAvatarActionsSheet(
         onTap: () async {
           final bytes = await _pickAndCrop(
             sheetContext,
-            () => FilePick.cameraPick(sheetContext),
+            () => FilePick.cameraPick(sheetContext, forCrop: true),
           );
           if (bytes == null || !sheetContext.mounted) return;
           result = AvatarUploadResult(bytes);