Bump decky-XRGaming to v1.5.4 (#992)

wheaney · web-flow · commit f27e2624562e · 2026-04-01T18:42:24.000-06:00
diff --git a/plugins/decky-XRGaming b/plugins/decky-XRGaming
@@ -1 +1 @@
-Subproject commit 3b1b7774bd23605e9f84825a96bfe6d4ca56bc66
+Subproject commit 646d431c19cb361c91cd3adf10a91d9ca886feda
