SpeechToTextManager: Deduplicate transcription jobs

Signed-off-by: Marcel Klehr <[email protected]>

lib/private/SpeechToText/SpeechToTextManager.php

@@ -94,6 +94,9 @@ public function scheduleFileTranscription(File $file): void {
 			throw new PreConditionNotMetException('No SpeechToText providers have been registered');
 		}
 		try {
+			if ($this->jobList->has(TranscriptionJob::class, ['fileId' => $file->getId()])) {
+				return;
+			}
 			$this->jobList->add(TranscriptionJob::class, ['fileId' => $file->getId()]);
 		} catch (NotFoundException|InvalidPathException $e) {
 			throw new InvalidArgumentException('Invalid file provided for file transcription: ' . $e->getMessage());