[WebGPU] RenderBundleEncoder::endCurrentICB may assert in ASAN builds on invalid bundle encoder

[mwyrzykowski]

21e320d

[WebGPU] RenderBundleEncoder::endCurrentICB may assert in ASAN builds on invalid bundle encoder
https://bugs.webkit.org/show_bug.cgi?id=274271
<radar://128064942>

Reviewed by Dan Glastonbury.

There is an ASAN assert in Vector::grow(sz) to ensure sz >= the current size,
which will not be true when replaying commands from an invalid RenderBundleEncoder.

But we shouldn't replay commands from an invalid RenderBundleEncoder in the first place,
so return early if the encoder is invalid.

* LayoutTests/fast/webgpu/fuzz-274271-expected.txt: Added.
* LayoutTests/fast/webgpu/fuzz-274271.html: Added.
* LayoutTests/TestExpectations:
Add regression test.

* Source/WebGPU/WebGPU/RenderBundleEncoder.h:
(WebGPU::RenderBundleEncoder::isValid const): Deleted.
* Source/WebGPU/WebGPU/RenderBundleEncoder.mm:
(WebGPU::RenderBundleEncoder::endCurrentICB):
(WebGPU::RenderBundleEncoder::isValid const):
(WebGPU::RenderBundleEncoder::replayCommands):

Canonical link: https://commits.webkit.org/278997@main

0abeda4

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[webkit-early-warning-system]

EWS run on previous version of this PR (hash bfdd297)

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✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2	✅ 🧪 wincairo-tests
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[djg]

[webkit-early-warning-system]

EWS run on current version of this PR (hash 0abeda4)

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✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
✅ 🧪 bindings	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2	🧪 wincairo-tests
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
✅ 🧪 webkitpy	❌ 🧪 ios-wk2-wpt	❌ 🧪 mac-wk1	✅ 🛠 wpe-cairo
✅ 🛠 🧪 jsc	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🛠 gtk
✅ 🛠 🧪 jsc-arm64	✅ 🛠 tv	✅ 🧪 mac-AS-debug-wk2	🧪 gtk-wk2
	✅ 🛠 tv-sim	✅ 🧪 mac-wk2-stress	✅ 🧪 api-gtk
🛠 🧪 merge	✅ 🛠 watch		✅ 🛠 jsc-armv7
✅ 🛠 🧪 unsafe-merge	✅ 🛠 watch-sim		✅ 🧪 jsc-armv7-tests

[webkit-commit-queue]

Committed 278997@main (21e320d): https://commits.webkit.org/278997@main

Reviewed commits have been landed. Closing PR #28668 and removing active labels.