Bug 1988988 support for masque in `proxy` API#28213

rebloor wants to merge 4 commits intomdn:mainmdn/browser-compat-data:mainfrom

rebloor:Bug-1988988-support-for-masque-in-proxy-APIrebloor/browser-compat-data:Bug-1988988-support-for-masque-in-proxy-APICopy head branch name to clipboard