[automerger skipped] Revert "Load env variables before c.config()" am:...

[automerger skipped] Revert "Load env variables before c.config()" am: 4e88859a am: 51c318f4 am: e41ee225 am: 80b1a4e2 -s ours

am skip reason: Merged-In I416e8da75f84aa2b53995f525cf50501488dc972 with SHA-1 51c40913 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/soong/+/15741350

Change-Id: I2c4a0838edc3536e587ebe74efd99ea11d7eea3d