Fix broken widget tests (#16383) #17575

Job	Run time
Build VSIX	1m 25s
cancel_previous_runs	6s
Lint	2m 5s
Type Script Tests (ubuntu-latest, ts-unit)	1m 24s
Type Script Tests (windows-latest, ts-unit)	4m 52s
Tests (raw, python, 3.10, ^[^@]+$\|@mandatory\|@kernelCore\|@python\|@jupyter, ubuntu-latest)	6m 57s
Tests (raw, python, 3.10, @widgets, ubuntu-latest)	4m 51s
Tests (raw, python, 3.10, @iw, ubuntu-latest)	4m 13s
Tests (raw, python, 3.10, @webview\|@export\|@lsp\|@variableViewer, ubuntu-latest)	4m 25s
Tests (raw, python, 3.10, @debugger, ubuntu-latest)	3m 32s
Tests (remote, python, 3.10, ^[^@]+$\|@mandatory, ubuntu-latest)	3m 54s
Tests (web, python, 3.10, ^[^@]+$\|@mandatory, ubuntu-latest)	3m 13s
Tests (raw, python, 3.10, ^[^@]+$\|@mandatory, windows-latest)	6m 5s
Tests (raw, python, 3.10, @widgets, ubuntu-latest, 8)	4m 24s
Tests (remote, python, 3.10, @widgets, ubuntu-latest, 8)	5m 30s
Tests (raw, conda, 3.10, ^[^@]+$\|@mandatory\|@python, ubuntu-latest)	3m 48s
Tests (raw, noPython, @nonPython, ubuntu-latest)	1m 43s
Tests (remote, python, 3.10, @kernelCore, ubuntu-latest)	4m 16s
Smoke tests (ubuntu-latest, 3.10)	1m 30s
Smoke tests (windows-latest, 3.10)	4m 30s
Smoke tests (macos-latest, 3.10)	1m 50s
	1h 14m 33s

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