Auto merge of #21785 - sumit0190:new_markasdirty, r=jdm

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] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #21691  (github issue number if applicable).

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- [X] These changes do not require tests because there isn't a direct way to test it (yet).

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