MM-25595 - Edits to bot username and display name fail to save (#14699)

* invalidate the user profile cache bc we know it's now outdated

* invalidate cache when updating user roles; test

* tests fix -- experimental

* fixing linter errors

* revert to original solution

Co-authored-by: mattermod <mattermod@users.noreply.github.com>

app/bot.go

@@ -89,6 +89,7 @@ func (a *App) PatchBot(botUserId string, botPatch *model.BotPatch) (*model.Bot,
 	if err != nil {
 		return nil, err
 	}
+	a.InvalidateCacheForUser(user.Id)
 
 	ruser := userUpdate.New
 	a.sendUpdatedUserEvent(*ruser)