[WGSL] Validate swizzle beyond vector size

[tadeuzagallo]

2a1f4cd

[WGSL] Validate swizzle beyond vector size
https://bugs.webkit.org/show_bug.cgi?id=257311
rdar://109819140

Reviewed by Mike Wyrzykowski.

We should validate that the vector swizzle member is within bounds, i.e. it's
invalid to use vec2.(z|w|b|a) and vec3.(w|a)

* Source/WebGPU/WGSL/TypeCheck.cpp:
(WGSL::TypeChecker::vectorFieldAccess):
* Source/WebGPU/WGSL/tests/invalid/vector.wgsl:

Canonical link: https://commits.webkit.org/264563@main

4c7fa53

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🛠 gtk
	✅ 🧪 ios-wk2-wpt		✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🧪 api-gtk
	✅ 🛠 tv	✅ 🧪 mac-AS-debug-wk2
	✅ 🛠 tv-sim
❌ 🛠 🧪 merge	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on current version of this PR (hash 4c7fa53)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🛠 gtk
	✅ 🧪 ios-wk2-wpt		✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🧪 api-gtk
	✅ 🛠 tv	✅ 🧪 mac-AS-debug-wk2
	✅ 🛠 tv-sim
❌ 🛠 🧪 merge	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-commit-queue]

Committed 264563@main (2a1f4cd): https://commits.webkit.org/264563@main

Reviewed commits have been landed. Closing PR #14333 and removing active labels.