Apple supports setLocalDescription without params (#11805)
Apple supports setLocalDescription without params (#11805)

Apple added support for this feature to Webkit in [changeset 266468](https://trac.webkit.org/changeset/266468/webkit). This was first tagged in [Safari-611.1.1](https://trac.webkit.org/browser/webkit/tags/Safari-611.1.1). Webkit trac seems to no longer show official Safari release tags, but the GitHub mirror [for this changeset](https://github.com/WebKit/WebKit/commit/4aacc635928f533a77bf67c942dec730d1ed9569) shows that it is included in tags `releases/Apple/Safari-14.1-macOS-11.3` and `releases/Apple/Safari-14.1-iOS-14.5`.

I have verified (prompted by my own question [on StackOverflow](https://stackoverflow.com/a/68550987/829970)) that this actually does work in Safari 14.1 on macOS.

refs #5814
mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data