test(webview): add Playwright visual regression harness #3376

Job	Run time
knip	43s
compile	2m 15s
check-translations	36s
dependency-review	15s
invisible-chars	7s
platform-unit-test (windows-latest)	8m 43s
platform-unit-test (ubuntu-latest)	4m 49s
	17m 28s

Provide feedback