Update wgpu to 29.0.3 (#57086)

Updates our fork to the latest v29 branch. Still waiting on a backport
to get upstreamed so we can go back to the main crate.

Release Notes:

- N/A
10fc0fb527Ben Brandt committed on 5/18/2026, 7:07:09 PM· committed by GitHubparentc3951af
2 files changedLine totals unavailable