Leak of MTLSharedTextureHandle in GraphicsContextGLCocoa.mm. Regressed in commit: [WebGL] Abstract attaching/detaching external images <https://bugs.webkit.org/show_bug.cgi?id=256945> <rdar://109495127> <https://commits.webkit.org/264712@main>
<rdar://problem/110796945>
Pull request: https://github.com/WebKit/WebKit/pull/14972
Committed 265174@main (de415e8be619): <https://commits.webkit.org/265174@main> Reviewed commits have been landed. Closing PR #14972 and removing active labels.