fix(player): guard the play overlay against the synthesized touch click

After the DR-098 tap rewrite, pausing became impossible while unpausing
always worked — an asymmetry that pointed straight at the overlay.

Pausing renders a full-screen play-overlay button over the video. The
compatibility click Android synthesizes from the tap arrives ~30-130ms
later, by which time that button exists, so the click lands on the
OVERLAY rather than the <video>. Its onclick called togglePlayPause with
no guard at all, resuming immediately. Unpausing was unaffected because
it removes the overlay, leaving nothing to intercept the click.

The suppression rule was only wired into the video element's handler.
Extract it as isSynthesizedTouchClick() in tapGestures.ts (unit-tested)
and use it from every click target layered over the video, the overlay
included.

Verified: 724 frontend tests pass, svelte-check clean. Bumped to 0.2.5
so the APK installs over 2004.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "jellytau",
-  "version": "0.2.4",
+  "version": "0.2.5",
   "description": "",
   "type": "module",
   "packageManager": "bun@1.3.5",