Add framebuffer check for mark_as_dirty, #21691
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Check `bound_framebuffer` in each `mark_as_dirty` call, so that we don't dirty the canvas if we don't have a bound framebuffer.
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- [X] These changes fix#21691 (github issue number if applicable).
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fix(webgl): fix issue https://github.com/servo/servo/issues/21352
If we have a bounded framebuffer previously, which is not the one to delete.
we would not change the !binding, but we would change the GLSide with Command::BindFramebuffer(Default).
change it to:
check the id before sending the Command
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- [ ] `./mach build -d` does not report any errors
- [ ] `./mach test-tidy` does not report any errors
- [x] These changes fix#21352
- [ ] There are tests for these changes OR
- [x] These changes do not require tests because `it's obviously simple.`
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Various webgl fixes for framebuffer attachment test
These changes resolve all panics on macOS when running framebuffer-object-attachment.html in headless and headful testing.
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] There are tests for these changes OR
- [x] Fixes#13710. Fixes#20570.
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