Don't filter the env passed to OptionsBootstrapper. #22678

Job	Run time
Ensure PR has a category label	3s
Classify changes	3s
Bootstrap Pants, test Rust (Linux-ARM64)	2m 5s
Bootstrap Pants, test and lint Rust (Linux-x86_64)	2m 18s
Bootstrap Pants, test Rust (macOS11-x86_64)	3m 54s
Build wheels (Linux-ARM64)	0s
Build wheels (Linux-x86_64)	0s
Build wheels (macOS10-15-x86_64)	0s
Build wheels (macOS11-ARM64)	0s
Ensure PR has release notes	3s
Test Python (Linux-ARM64)	1m 30s
Lint Python and Shell	3m 25s
Test Python (Linux-x86_64) Shard 1/10	16m 11s
Test Python (Linux-x86_64) Shard 3/10	15m 4s
Test Python (Linux-x86_64) Shard 2/10	17m 30s
Test Python (Linux-x86_64) Shard 0/10	16m 54s
Test Python (Linux-x86_64) Shard 4/10	25m 51s
Test Python (Linux-x86_64) Shard 5/10	12m 43s
Test Python (Linux-x86_64) Shard 6/10	9m 28s
Test Python (Linux-x86_64) Shard 8/10	12m 58s
Test Python (Linux-x86_64) Shard 7/10	14m 52s
Test Python (Linux-x86_64) Shard 9/10	9m 30s
Test Python (macOS11-x86_64)	12m 42s
Set Merge OK	0s
Merge OK	1s
	2h 57m 5s

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