Skip frustum clipping in viewer

[ryantrem]

I recently removed the code that was setting performancePriority to Aggressive because it broke some rendering scenarios (still investigating). However removing it also breaks other things. Specifically, we need to skip frustum culling (render all meshes) for WebGPU snapshot mode. So I'm adding this back explicitly (along with one other performancePriority related setting) for now. Also I updated the published.html test file to use jsdelivr instead of unpkg as it is faster and easier to use when testing.

[bjsplat]

Please make sure to label your PR with "bug", "new feature" or "breaking change" label(s).
To prevent this PR from going to the changelog marked it with the "skip changelog" label.

[bjsplat]

Snapshot stored with reference name:
refs/pull/15740/merge

Test environment:
https://snapshots-cvgtc2eugrd3cgfd.z01.azurefd.net/refs/pull/15740/merge/index.html

To test a playground add it to the URL, for example:

https://snapshots-cvgtc2eugrd3cgfd.z01.azurefd.net/refs/pull/15740/merge/index.html#WGZLGJ#4600

Links to test babylon tools with this snapshot:

https://playground.babylonjs.com/?snapshot=refs/pull/15740/merge
https://sandbox.babylonjs.com/?snapshot=refs/pull/15740/merge
https://gui.babylonjs.com/?snapshot=refs/pull/15740/merge
https://nme.babylonjs.com/?snapshot=refs/pull/15740/merge

To test the snapshot in the playground with a playground ID add it after the snapshot query string:

https://playground.babylonjs.com/?snapshot=refs/pull/15740/merge#BCU1XR#0

[bjsplat]

Visualization tests for WebGPU (Experimental)

https://snapshots-cvgtc2eugrd3cgfd.z01.azurefd.net/refs/pull/15740/merge/testResults/webgpuplaywright/index.html

[bjsplat]

WebGL2 visualization test reporter:

https://snapshots-cvgtc2eugrd3cgfd.z01.azurefd.net/refs/pull/15740/merge/testResults/webgl2playwright/index.html