Bug 260214

<rdar://problem/113921763>

This crash is seen on our EWS bot (https://ews-build.s3-us-west-2.amazonaws.com/macOS-AppleSilicon-Ventura-Debug-WK2-Tests-EWS/027ff49c-12080/imported/w3c/web-platform-tests/speech-api/SpeechSynthesis-speak-without-activation-fails.tentative-crash-log.txt): WebCore::JSEventListener::ensureJSFunction(WebCore::ScriptExecutionContext &) const 1 0x1361b29d8 WTFCrash 2 0x283fe8460 WebCore::NetworkResourcesData::ResourceData::hasContent() const 3 0x283ff92cc WebCore::JSEventListener::ensureJSFunction(WebCore::ScriptExecutionContext&) const 4 0x282e3de1c WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext&, WebCore::Event&) 5 0x2837f8554 WebCore::EventTarget::innerInvokeEventListeners(WebCore::Event&, WTF::Vector<WTF::RefPtr<WebCore::RegisteredEventListener, WTF::RawPtrTraits<WebCore::RegisteredEventListener>, WTF::DefaultRefDerefTraits<WebCore::RegisteredEventListener>>, 1ul, WTF::CrashOnOverflow, 2ul, WTF::FastMalloc>, WebCore::EventTarget::EventInvokePhase) 6 0x2837f7ffc WebCore::EventTarget::fireEventListeners(WebCore::Event&, WebCore::EventTarget::EventInvokePhase) 7 0x2837f7e54 WebCore::EventTarget::dispatchEvent(WebCore::Event&) 8 0x28293017c WebCore::SpeechSynthesisUtterance::eventOccurred(WTF::AtomString const&, unsigned long, unsigned long, WTF::String const&) 9 0x28292fe3c WebCore::SpeechSynthesis::handleSpeakingCompleted(WebCore::SpeechSynthesisUtterance&, bool) 10 0x282930a50 WebCore::SpeechSynthesis::didFinishSpeaking(WebCore::PlatformSpeechSynthesisUtterance&) 11 0x2829305c0 WebCore::SpeechSynthesis::didFinishSpeaking()

Pull request: https://github.com/WebKit/WebKit/pull/16714

Committed 266959@main (42ffbe195e69): <https://commits.webkit.org/266959@main> Reviewed commits have been landed. Closing PR #16714 and removing active labels.