Electron Releases

Description of Change

Three ownership/lifetime fixes; each commit message has the specifics.

• sharedTexture.subtle.importSharedTexture() — the native wrapper was freed with the returned object while its method functions still pointed at it; tie its lifetime to the shared v8::External every method holds, and make release() idempotent.
• Service-worker ipcRenderer (IPCServiceWorker) — cppgc object registered as a WorkerThread observer and never unregistered; add a prefinalizer that removes it.
• utilityProcess.fork({ stdio }) — native side indexed three entries unconditionally and left IOType uninitialised for unknown strings; clamp to the array size and default the rest.

Specs added for shared texture and utilityProcess.

Checklist

• PR description included
• npm test passes
• tests are changed or added
• PR release notes describe the change in a way relevant to app developers, and are capitalized, punctuated, and past tense.

Release Notes

Notes: Fixed crashes in sharedTexture, service-worker ipcRenderer and utilityProcess.fork() caused by object lifetime bugs.