remove python extension override of PATH variable (#5354) #1074

Job	Run time
Check Python types	2m 56s
Lint	1m 48s
Test Positron IPyKernel (ubuntu-latest, 3.8)	3m 15s
Test Minimum Positron IPyKernel Dependencies (ubuntu-latest, 3.8)	3m 30s
Python Tests (ubuntu-latest, 3.8)	1m 36s
Test TypeScript (ubuntu-latest, 3.x, ts-unit)	3m 16s
Python Tests (ubuntu-latest, 3.12)	1m 36s
Test Positron IPyKernel (macos-13, 3.9)	2m 30s
Test TypeScript (ubuntu-latest, 3.x, functional)	2m 9s
Test Positron IPyKernel (windows-latest, 3.10)	4m 56s
Test TypeScript (macos-12, 3.x, ts-unit)	5m 15s
Test Positron IPyKernel (ubuntu-latest, 3.11)	2m 57s
Test TypeScript (macos-12, 3.x, venv)	4m 48s
Test Positron IPyKernel (ubuntu-latest, 3.12)	2m 55s
Test TypeScript (macos-12, 3.x, single-workspace)	6m 5s
Test TypeScript (macos-12, 3.x, debugger)	4m 50s
Test TypeScript (macos-12, 3.x, functional)	3m 47s
Test TypeScript (macos-12, 3.x, smoke)	6m 16s
Test TypeScript (windows-latest, 3.x, ts-unit)	8m 25s
Test TypeScript (windows-latest, 3.x, functional)	6m 4s
	1h 18m 54s

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