New dot:ModalDialog control, wrapper for <dialog> #2936

Job	Run time
JS unit tests	1m 3s
Build all projects without errors	10m 24s
Build published projects without warnings (Release)	2m 19s
.NET unit tests (ubuntu-latest)	3m 16s
Build published projects without warnings (Debug)	2m 35s
.NET unit tests (windows-2022)	11m 33s
UI tests (chrome, ubuntu-latest, Production, Default)	13m 20s
UI tests (chrome, windows-2022, Development, Default)	28m 6s
.NET unit tests (macOS-latest)	4m 56s
UI tests (firefox, ubuntu-latest, Development, Default)	18m 25s
UI tests (firefox, ubuntu-latest, Production, Default)	17m 30s
UI tests (firefox, ubuntu-latest, Development, ExperimentalFeaturesTests)	19m 19s
UI tests (chrome, ubuntu-latest, Production, ExperimentalFeaturesTests)	12m 58s
	2h 25m 44s

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