Record duration is cut off after editor is opened

[ibrahimyaacob92]

[meiiie]

Opened draft #299. The fix keeps the auto-created full-track clip in sync when the media duration grows after the first metadata pass, while leaving user-edited clip timelines unchanged.

[meiiie]

Closing this as fixed by #299. The merged change keeps the auto-created full-track clip in sync when the media duration grows after the first metadata pass, while leaving user-edited clip timelines unchanged.