Fix MM-53949 (#24237)

* Fix MM-53948

* Fix tests

* Fix missing layers

server/channels/app/file.go

@@ -555,13 +555,27 @@ func GeneratePublicLinkHash(fileID, salt string) string {
 
 // UploadFile uploads a single file in form of a completely constructed byte array for a channel.
 func (a *App) UploadFile(c request.CTX, data []byte, channelID string, filename string) (*model.FileInfo, *model.AppError) {
+	return a.UploadFileForUserAndTeam(c, data, channelID, filename, "", "")
+}
+
+func (a *App) UploadFileForUserAndTeam(c request.CTX, data []byte, channelID string, filename string, rawUserId string, rawTeamId string) (*model.FileInfo, *model.AppError) {
 	_, err := a.GetChannel(c, channelID)
 	if err != nil && channelID != "" {
 		return nil, model.NewAppError("UploadFile", "api.file.upload_file.incorrect_channelId.app_error",
 			map[string]any{"channelId": channelID}, "", http.StatusBadRequest)
 	}
 
-	info, _, appError := a.DoUploadFileExpectModification(c, time.Now(), "noteam", channelID, "nouser", filename, data)
+	userId := rawUserId
+	if userId == "" {
+		userId = "nouser"
+	}
+
+	teamId := rawTeamId
+	if teamId == "" {
+		teamId = "noteam"
+	}
+
+	info, _, appError := a.DoUploadFileExpectModification(c, time.Now(), teamId, channelID, userId, filename, data)
 	if appError != nil {
 		return nil, appError
 	}