Dan Blackwell a0e8462770
[compiler-rt][sanitizer_common] Improve handling of env vars for iOS simulator tests (#146721)
* Fix splitting of arguments such as `LSAN_OPTIONS=suppressions=lsan.supp`
* Prevent environment variables set in parent process being overwritten
* Replace hard-coded `env` with `%env` to allow overriding depending on target
* Replace deprecated `pipes` usage with `shlex`
* Run formatter over `iossim_env.py`
2025-07-03 10:25:08 -07:00
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