chore(sdui): re-record plugin-grid's sources digest on the merged tree

After merging 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":44,"sha256":"afbc05964d76c725b0d533f1bd28b1515591d0748eca468158f64fc3bb7f7a80","manifestSha256":"1f6e1ccb925a678eaa393f9091dfc7d0285e4e3626e0a5c61a5474687debabb7"}
+{"package":"ui/packages/plugin-grid","sources":44,"sha256":"bab483277a19b53c61a6104bd9465e62f0767bee2c6e28cf0c6d4f080eed1099","manifestSha256":"1f6e1ccb925a678eaa393f9091dfc7d0285e4e3626e0a5c61a5474687debabb7"}