chore(sdui): re-record plugin-grid's sources digest after #26354

Merged origin/main (main's record taken at the merge); node
scripts/gen-sdui-manifest-node.mjs re-recorded plugin-grid alone, the
artefact did not move. node scripts/check-sdui-manifest.mjs exit 0.

Claude-Session: https://claude.ai/code/session_01SMps7wq7rBTk53e8KTSEup
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

scripts/sdui-manifest.sources/plugin-grid.json

@@ -1 +1 @@
-{"package":"ui/packages/plugin-grid","sources":46,"sha256":"2c2577a854216b798b363a8751d8924e3e9205404c0eb592b5f3d53197cd3bc0","manifestSha256":"1f6e1ccb925a678eaa393f9091dfc7d0285e4e3626e0a5c61a5474687debabb7"}
+{"package":"ui/packages/plugin-grid","sources":46,"sha256":"c0a562a633d4901dcde8bad54819f468c8ed4d7ca4f002cf7defa764ebfcd7d8","manifestSha256":"1f6e1ccb925a678eaa393f9091dfc7d0285e4e3626e0a5c61a5474687debabb7"}