Fixes to fetching widgets from remote kernels #15978

Job	Run time
Build VSIX	1m 34s
cancel_previous_runs	2s
Lint	2m 40s
Type Script Tests (ubuntu-latest, ts-unit)	1m 35s
Type Script Tests (windows-latest, ts-unit)	7m 52s
Tests (raw, python, 3.10, ^[^@]+$\|@mandatory\|@kernelCore\|@python\|@jupyter, ubuntu-latest)	5m 13s
Tests (raw, python, 3.10, @widgets, ubuntu-latest)	5m 3s
Tests (raw, python, 3.10, @iw, ubuntu-latest)	4m 3s
Tests (raw, python, 3.10, @webview\|@export\|@lsp\|@variableViewer, ubuntu-latest)	5m 11s
Tests (raw, python, 3.10, @debugger, ubuntu-latest)	11m 13s
Tests (remote, python, 3.10, ^[^@]+$\|@mandatory, ubuntu-latest)	3m 43s
Tests (remote, python, 3.10, prerelease, ^[^@]+$\|@mandatory, ubuntu-latest)	4m 10s
Tests (web, python, 3.10, ^[^@]+$\|@mandatory, ubuntu-latest)	3m 53s
Tests (raw, python, 3.10, ^[^@]+$\|@mandatory, windows-latest)	8m 21s
Tests (raw, python, 3.10, @widgets, ubuntu-latest, 8)	4m 30s
Tests (remote, python, 3.10, @widgets, ubuntu-latest, 8)	5m 35s
Tests (raw, conda, 3.10, ^[^@]+$\|@mandatory\|@python, ubuntu-latest)	4m 55s
Tests (raw, python, 3.10, prerelease, ^[^@]+$\|@mandatory\|@kernelCore\|@python\|@jupyter, ubuntu-lat...	5m 34s
Tests (raw, noPython, @nonPython, ubuntu-latest)	1m 47s
Tests (remote, python, 3.10, @kernelCore, ubuntu-latest)	4m 23s
Smoke tests (ubuntu-latest, 3.10)	2m 46s
Smoke tests (windows-latest, 3.10)	6m 4s
Smoke tests (macos-latest, 3.10)	4m 3s
Coverage reports upload	0s
	1h 44m 10s

Provide feedback