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Fix duplicate environments showing up on macOS (#22030) #1534

Job	Run time
Set up	1s
Python Tests (ubuntu-latest, 3.8)	2m 28s
Check Python types	2m 0s
Python Tests (ubuntu-latest, 3.x)	2m 11s
Lint	3m 13s
Python Tests (windows-latest, 3.8)	4m 52s
Python Tests (windows-latest, 3.x)	5m 14s
Tests (ubuntu-latest, 3.x, ts-unit)	2m 40s
Tests (ubuntu-latest, 3.x, venv)	3m 30s
Tests (ubuntu-latest, 3.x, single-workspace)	3m 38s
Tests (ubuntu-latest, 3.x, multi-workspace)	3m 55s
Tests (ubuntu-latest, 3.x, debugger)	2m 23s
Tests (ubuntu-latest, 3.x, functional)	2m 30s
Tests (windows-latest, 3.x, ts-unit)	8m 11s
Tests (windows-latest, 3.x, venv)	5m 35s
Tests (windows-latest, 3.x, single-workspace)	8m 33s
Tests (windows-latest, 3.x, multi-workspace)	9m 42s
Tests (windows-latest, 3.x, debugger)	7m 43s
Tests (windows-latest, 3.x, functional)	7m 50s
Create VSIX	2m 38s
Smoke tests (ubuntu-latest)	2m 35s
Smoke tests (windows-latest)	7m 48s
	1h 39m 10s

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