XYZ-32: Increases size of position to 128 characters. (#8148)

* XYZ-32: Changes type of 'position' column on 'users' table.

* XYZ-32: Uncomment to run on CI and pre-release.

* XYZ-32: Reverts translation changes.

* XYZ-32: Fix for gofmt.

i18n/en.json

@@ -5404,7 +5404,7 @@
   },
   {
     "id": "model.user.is_valid.position.app_error",
-    "translation": "Invalid position: must not be longer than 35 characters."
+    "translation": "Invalid position: must not be longer than 128 characters."
   },
   {
     "id": "model.user.is_valid.pwd.app_error",