[Wasm-GC] Fix refcounts for compound type definitions

[takikawa]

febd681

[Wasm-GC] Fix refcounts for compound type definitions
https://bugs.webkit.org/show_bug.cgi?id=247874

Reviewed by Yusuke Suzuki.

Compound type definitions that use type indices to refer to other types
need to ref/deref the referred type definitions in order to keep them
live (since the module's type signature list will not necessarily hold
these types). Type definitions that only hold value types such as
functions or arrays are fine as-is.

* JSTests/wasm/gc/bug247874.js: Added.
(i.instantiate.module.type.struct.type.sub.0.struct.field.i32.global.import.string_appeared_here.string_appeared_here):
(i.instantiate.module.rec.type.struct.type.func.global.import.string_appeared_here.string_appeared_here):
* Source/JavaScriptCore/wasm/WasmTypeDefinition.cpp:
(JSC::Wasm::Subtype::cleanup):
(JSC::Wasm::Projection::cleanup):
(JSC::Wasm::RecursionGroup::cleanup):
(JSC::Wasm::TypeDefinition::cleanup):
(JSC::Wasm::RecursionGroupParameterTypes::translate):
(JSC::Wasm::ProjectionParameterTypes::translate):
(JSC::Wasm::SubtypeParameterTypes::translate):
(JSC::Wasm::TypeInformation::tryCleanup):
* Source/JavaScriptCore/wasm/WasmTypeDefinition.h:

Canonical link: https://commits.webkit.org/256800@main

13c577c

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 🧪 win
	✅ 🛠 ios-sim	✅ 🛠 mac-debug	✅ 🛠 gtk	✅ 🛠 wincairo
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🛠 mac-AS-debug	✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 api-mac	✅ 🧪 api-gtk
✅ 🛠 🧪 jsc	✅ 🛠 tv	✅ 🧪 mac-wk1	✅ 🛠 jsc-armv7
	✅ 🛠 tv-sim	✅ 🧪 mac-wk2	✅ 🧪 jsc-armv7-tests
	✅ 🛠 watch	✅ 🧪 mac-AS-debug-wk2	✅ 🛠 jsc-mips
✅ 🛠 🧪 unsafe-merge	✅ 🛠 watch-sim	✅ 🧪 mac-wk2-stress	✅ 🧪 jsc-mips-tests

[webkit-early-warning-system]

EWS run on current version of this PR (hash 13c577c)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 🧪 win
	✅ 🛠 ios-sim	✅ 🛠 mac-debug	✅ 🛠 gtk	✅ 🛠 wincairo
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🛠 mac-AS-debug	✅ 🧪 gtk-wk2
	✅ 🧪 api-ios	✅ 🧪 api-mac	✅ 🧪 api-gtk
✅ 🛠 🧪 jsc	✅ 🛠 tv	✅ 🧪 mac-wk1	✅ 🛠 jsc-armv7
	✅ 🛠 tv-sim	✅ 🧪 mac-wk2	✅ 🧪 jsc-armv7-tests
	✅ 🛠 watch	✅ 🧪 mac-AS-debug-wk2	✅ 🛠 jsc-mips
✅ 🛠 🧪 unsafe-merge	✅ 🛠 watch-sim	✅ 🧪 mac-wk2-stress	✅ 🧪 jsc-mips-tests

[Constellation]

r=me

[webkit-commit-queue]

Committed 256800@main (febd681): https://commits.webkit.org/256800@main

Reviewed commits have been landed. Closing PR #6527 and removing active labels.