MM-68439 Centralize filename handling for FileInfo (#36223) (#36255)

Automatic Merge

server/i18n/en.json

@@ -7428,6 +7428,10 @@
     "id": "app.upload.create.save.app_error",
     "translation": "Failed to save upload."
   },
+  {
+    "id": "app.upload.gen_file_info.invalid_filename.app_error",
+    "translation": "Invalid filename."
+  },
   {
     "id": "app.upload.get.app_error",
     "translation": "Failed to get upload."
@@ -9868,6 +9872,10 @@
     "id": "model.file_info.is_valid.id.app_error",
     "translation": "Invalid value for id."
   },
+  {
+    "id": "model.file_info.is_valid.name.app_error",
+    "translation": "Invalid value for name."
+  },
   {
     "id": "model.file_info.is_valid.path.app_error",
     "translation": "Invalid value for path."