New dot:ModalDialog control, wrapper for <dialog> #2897

Job	Run time
Build all projects without errors	6m 38s
JS unit tests	1m 14s
Build published projects without warnings (Release)	2m 47s
Build published projects without warnings (Debug)	2m 46s
.NET unit tests (ubuntu-latest)	2m 12s
UI tests (chrome, ubuntu-latest, Production, Default)	13m 27s
.NET unit tests (windows-2022)	6m 39s
UI tests (chrome, windows-2022, Development, Default)	23m 34s
.NET unit tests (macOS-latest)	5m 30s
UI tests (firefox, ubuntu-latest, Development, Default)	18m 19s
UI tests (firefox, ubuntu-latest, Production, Default)	17m 46s
UI tests (firefox, ubuntu-latest, Development, ExperimentalFeaturesTests)	18m 3s
UI tests (chrome, ubuntu-latest, Production, ExperimentalFeaturesTests)	13m 38s
	2h 12m 33s

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