Reduce usage of sysPrefix from old Python API (#15095) #15959

Job	Run time
cancel_previous_runs	4s
Build VSIX	1m 36s
Lint	2m 18s
Type Script Tests (ubuntu-latest, ts-unit)	1m 44s
Tests (raw, python, 3.10, ^[^@]+$\|@mandatory\|@kernelCore\|@python\|@jupyter, ubuntu-latest)	4m 31s
Type Script Tests (windows-latest, ts-unit)	6m 6s
Tests (raw, python, 3.10, @widgets, ubuntu-latest)	5m 2s
Tests (raw, python, 3.10, @iw, ubuntu-latest)	4m 19s
Tests (raw, python, 3.10, @webview\|@export\|@lsp\|@variableViewer, ubuntu-latest)	5m 12s
Tests (raw, python, 3.10, @debugger, ubuntu-latest)	3m 37s
Tests (remote, python, 3.10, ^[^@]+$\|@mandatory, ubuntu-latest)	4m 9s
Tests (remote, python, 3.10, prerelease, ^[^@]+$\|@mandatory, ubuntu-latest)	3m 59s
Tests (web, python, 3.10, ^[^@]+$\|@mandatory, ubuntu-latest)	4m 15s
Tests (raw, python, 3.10, ^[^@]+$\|@mandatory, windows-latest)	5m 38s
Tests (raw, python, 3.10, @widgets, ubuntu-latest, 8)	4m 44s
Tests (remote, python, 3.10, @widgets, ubuntu-latest, 8)	5m 43s
Tests (raw, conda, 3.10, ^[^@]+$\|@mandatory\|@python, ubuntu-latest)	4m 44s
Tests (raw, python, 3.10, prerelease, ^[^@]+$\|@mandatory\|@kernelCore\|@python\|@jupyter, ubuntu-lat...	4m 20s
Tests (raw, noPython, @nonPython, ubuntu-latest)	2m 1s
Tests (remote, python, 3.10, @kernelCore, ubuntu-latest)	4m 27s
Smoke tests (ubuntu-latest, 3.10)	2m 51s
Smoke tests (windows-latest, 3.10)	6m 6s
Smoke tests (macos-latest, 3.10)	4m 22s
Coverage reports upload	1m 12s
	1h 33m 0s

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