Reduce error noise

mobile/lib/services/collections_service.dart

@@ -729,7 +729,7 @@ class CollectionsService {
       collection.setName(newName);
       sync().ignore();
     } catch (e, s) {
-      _logger.severe("failed to rename collection", e, s);
+      _logger.warning("failed to rename collection", e, s);
       rethrow;
     }
   }

mobile/lib/ui/viewer/gallery/gallery_app_bar_widget.dart

@@ -179,7 +179,7 @@ class _GalleryAppBarWidgetState extends State<GalleryAppBarWidget> {
             setState(() {});
           }
         } catch (e, s) {
-          _logger.severe("Failed to rename album", e, s);
+          _logger.warning("Failed to rename album", e, s);
           rethrow;
         }
       },
@@ -610,7 +610,7 @@ class _GalleryAppBarWidgetState extends State<GalleryAppBarWidget> {
         await dialog.hide();
         Navigator.of(context).pop();
       } catch (e, s) {
-        _logger.severe("failed to trash collection", e, s);
+        _logger.warning("failed to trash collection", e, s);
         await dialog.hide();
         await showGenericErrorDialog(context: context, error: e);
       }

mobile/lib/utils/file_uploader_util.dart

@@ -346,7 +346,7 @@ Future<MediaUploadData> _getMediaUploadDataFromAppCache(EnteFile file) async {
       width: dimensions?['width'],
     );
   } catch (e, s) {
-    _logger.severe("failed to generate thumbnail", e, s);
+    _logger.warning("failed to generate thumbnail", e, s);
     throw InvalidFileError(
       "thumbnail failed for appCache fileType: ${file.fileType.toString()}",
       InvalidReason.thumbnailMissing,