fix(player): make autoplay independent of next/previous controls
Prepare automatic media queues when either navigation or the relevant video/audio
autoplay preference is enabled. Apply the same decision in library, folder, tree,
granted-folder, and network launches, preserving browser ordering and the existing
button visibility preference. Forward library launch geometry to preserve the
orientation fix when playback uses a prepared queue.
Remove the navigation preference from EOF fallback discovery, allow an implicit
single-item launch to discover siblings, and reject superseded EOF requests.
Keep explicit queues bounded to their selected items and retain repeat behavior.
Clarify the disabled-navigation summary in all 11 supported locales.
Validation: source review of navigation/autoplay on/off combinations, queue
creation, foreground/background EOF behavior, existing visibility gates, and
request cancellation; changed resource XML parsing and git diff --check passed.
No Android builds, compilation, or device runtime tests were run.