Fix issues with rendering of nested HTML widgets (#16358) #17552

Job	Run time
Build VSIX	1m 22s
Lint	1m 59s
cancel_previous_runs	3s
Type Script Tests (ubuntu-latest, ts-unit)	1m 23s
Type Script Tests (windows-latest, ts-unit)	5m 42s
Tests (raw, python, 3.10, ^[^@]+$\|@mandatory\|@kernelCore\|@python\|@jupyter, ubuntu-latest)	6m 7s
Tests (raw, python, 3.10, @widgets, ubuntu-latest)	4m 50s
Tests (raw, python, 3.10, @iw, ubuntu-latest)	4m 4s
Tests (raw, python, 3.10, @webview\|@export\|@lsp\|@variableViewer, ubuntu-latest)	4m 30s
Tests (raw, python, 3.10, @debugger, ubuntu-latest)	3m 32s
Tests (remote, python, 3.10, ^[^@]+$\|@mandatory, ubuntu-latest)	4m 19s
Tests (web, python, 3.10, ^[^@]+$\|@mandatory, ubuntu-latest)	3m 10s
Tests (raw, python, 3.10, ^[^@]+$\|@mandatory, windows-latest)	6m 17s
Tests (raw, python, 3.10, @widgets, ubuntu-latest, 8)	4m 41s
Tests (remote, python, 3.10, @widgets, ubuntu-latest, 8)	5m 23s
Tests (raw, conda, 3.10, ^[^@]+$\|@mandatory\|@python, ubuntu-latest)	3m 49s
Tests (raw, noPython, @nonPython, ubuntu-latest)	1m 57s
Tests (remote, python, 3.10, @kernelCore, ubuntu-latest)	4m 9s
Smoke tests (ubuntu-latest, 3.10)	1m 32s
Smoke tests (windows-latest, 3.10)	3m 35s
Smoke tests (macos-latest, 3.10)	1m 38s
	1h 14m 2s

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