Restore the v4l2-relayd splashsrc patch clobbered by AUR sync

Commit 7922065 added 0002-escape-optional-splashsrc-expansion.patch
directly to the package dir, but the AUR sync bot regenerates the dir
from AUR plus .omarchy/patches, so the next sync (f886efe) dropped the
patch and reverted pkgrel to 2.1. That stale pkgrel then made the build
server rebuild 0.2.0-2.1, whose filenames already exist in production,
failing promotion.

Restore the patch and pkgrel=2.2, carry the customization as an
.omarchy/patches sync patch, and bump the metadata pkgrel suffix to 2
so future syncs keep producing 2.2.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

pkgbuilds/v4l2-relayd/.omarchy/package.json

@@ -1,7 +1,7 @@
 {
   "source": "aur",
   "pkgrel": {
-    "suffix": 1,
+    "suffix": 2,
     "offset": 1
   },
   "upstream_commit": "086fa284d7f5ad562ea6ba79b3cb4fd798e759d3"