Make WhisperX uploads replayable

internal/adapters/whisperx/http_test.go

@@ -365,7 +365,7 @@ func TestHTTPClientEarlyServerResponseReturns(t *testing.T) {
 	}
 }
 
-func TestHTTPClientCancellationReleasesBlockedProducer(t *testing.T) {
+func TestHTTPClientCancellationReleasesBlockedSource(t *testing.T) {
 	release := make(chan struct{})
 	source := newGatedReadCloser([]byte("audio-data"), release)
 	firstByteReceived := make(chan struct{})