Add runtime detection for toResizableBuffer. NFC

[sbc100]

Since this is now shipping in the current version of all major browsers
we want to take advantage of it whenever possible.

I am leaving the GROWABLE_ARRAYBUFFERS setting in place for now since
enabling it unconditionally can still save a little on codesize but we
may want to to just remove that at some point.

As a side effect I think this might address #27084.

[kleisauke]

I am leaving the GROWABLE_ARRAYBUFFERS setting in place for now since
enabling it unconditionally can still save a little on codesize but we
may want to to just remove that at some point.

A nice thing about -sGROWABLE_ARRAYBUFFERS is that it also avoids the emscripten_notify_memory_growth(0) call that would otherwise be triggered each time Wasm memory grows.

emscripten/system/lib/standalone/standalone.c

Lines 138 to 141 in d1fbb02

	#if !defined(EMSCRIPTEN_PURE_WASI)
	// Success, update JS (see https://github.com/WebAssembly/WASI/issues/82)
	emscripten_notify_memory_growth(0);
	#endif

It also skips the -sSHARED_MEMORY acorn pass, which adds some overhead too.

emscripten/tools/acorn-optimizer.mjs

Lines 1081 to 1084 in d1fbb02

	// Instrument heap accesses to call growMemViews helper function, which allows
	// pthreads + memory growth to work (we check if the memory was grown on another thread
	// in each access), see #8365.
	function growableHeap(ast) {

Thinking about this more, since -sGROWABLE_ARRAYBUFFERS is a link-time setting only, how about making the -sGROWABLE_ARRAYBUFFERS setting internally and applying it automatically when targeting modern environments? For example, it could be enabled when someone builds with -sENVIRONMENT=node -sMIN_NODE_VERSION=260000 or -sENVIRONMENT=web -sMIN_CHROME_VERSION=144 -sMIN_FIREFOX_VERSION=145 -sMIN_SAFARI_VERSION=260200.

emscripten/tools/feature_matrix.py

Lines 143 to 151 in d1fbb02

	Feature.GROWABLE_ARRAYBUFFERS: {
	'chrome': 144,
	'firefox': 145,
	'safari': 260200,
	# Supported with flag --experimental-wasm-rab-integration (TODO: Change
	# this to unflagged version of Node.js 260000, see also the comment in
	# Feature.WASM_EXCEPTIONS above)
	'node': 240000,
	},