Allow actions to read BUILD_BROKEN_INCORRECT_PARTITION_IMAGES

To maintain good backwards compatibility with the legacy partition
building behavior, allow actions to read
BUILD_BROKEN_INCORRECT_PARTITION_IMAGES so that we don't have to rerun
analysis.

Bug: 205632228
Test: Presubmits
Change-Id: I8b25a62f24bc6d628fb055239b084f6ea535e38b