MM-37491: Fix flaky test on file content extraction (#18077)

* MM-37491: Fix flaky test on file content extraction

* Changing Error log to Warn log

* Fix uppercase and dot in the log file

* Simplifiying the test case

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

app/file.go

@@ -1356,6 +1356,12 @@ func (a *App) ExtractContentFromFileInfo(fileInfo *model.FileInfo) error {
 		if storeErr := a.Srv().Store.FileInfo().SetContent(fileInfo.Id, text); storeErr != nil {
 			return errors.Wrap(storeErr, "failed to save the extracted file content")
 		}
+		reloadFileInfo, storeErr := a.Srv().Store.FileInfo().Get(fileInfo.Id)
+		if storeErr != nil {
+			mlog.Warn("Failed to invalidate the fileInfo cache.", mlog.Err(storeErr), mlog.String("file_info_id", fileInfo.Id))
+		} else {
+			a.Srv().Store.FileInfo().InvalidateFileInfosForPostCache(reloadFileInfo.PostId, false)
+		}
 	}
 	return nil
 }