[JSC] Implement Promise.try

[rkirsling]

6d51d57

[JSC] Implement Promise.try
https://bugs.webkit.org/show_bug.cgi?id=269775

Reviewed by Justin Michaud.

This patch implements https://github.com/tc39/proposal-promise-try behind a runtime option;
the proposal is currently at Stage 2 but the spec is very simple and not expected to change.

Effectively, Promise.try(f) is a more convenient way to write `new Promise((resolve) => { resolve(f()); })` --
we don't care whether f is sync or async, but if is synchronous, we want it to be executed immediately.

This implementation includes tc39/proposal-promise-try#16, which the champion expects to merge;
it simply extends the API to Promise.try(f, ...args) such that arguments can be forwarded to the callback.

* JSTests/stress/promise-try.js: Added.
* Source/JavaScriptCore/builtins/PromiseConstructor.js:
(try): Added.
* Source/JavaScriptCore/runtime/JSPromiseConstructor.cpp:
(JSC::JSPromiseConstructor::finishCreation):
* Source/JavaScriptCore/runtime/OptionsList.h:

Canonical link: https://commits.webkit.org/275081@main

adb9e75

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	✅ 🧪 ios-wk2-wpt	✅ 🧪 mac-wk1	✅ 🛠 gtk
✅ 🛠 🧪 jsc	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🧪 gtk-wk2
✅ 🛠 🧪 jsc-arm64	✅ 🛠 tv	✅ 🧪 mac-AS-debug-wk2	✅ 🧪 api-gtk
	✅ 🛠 tv-sim		✅ 🛠 jsc-armv7
✅ 🛠 🧪 merge	✅ 🛠 watch		✅ 🧪 jsc-armv7-tests
	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on current version of this PR (hash adb9e75)

Misc	iOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 wincairo
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	✅ 🧪 ios-wk2-wpt	✅ 🧪 mac-wk1	✅ 🛠 gtk
✅ 🛠 🧪 jsc	✅ 🧪 api-ios	✅ 🧪 mac-wk2	✅ 🧪 gtk-wk2
✅ 🛠 🧪 jsc-arm64	✅ 🛠 tv	✅ 🧪 mac-AS-debug-wk2	✅ 🧪 api-gtk
	✅ 🛠 tv-sim		✅ 🛠 jsc-armv7
✅ 🛠 🧪 merge	✅ 🛠 watch		✅ 🧪 jsc-armv7-tests
	✅ 🛠 watch-sim

[justinmichaud]

Nice!

[webkit-commit-queue]

Commit message contains (OOPS!) and no reviewer found, blocking PR #24802

[justinmichaud]

r=me

[webkit-commit-queue]

Committed 275081@main (6d51d57): https://commits.webkit.org/275081@main

Reviewed commits have been landed. Closing PR #24802 and removing active labels.