[automerge] Fix integer wrap sanitisation. 2p: 2b597691ef

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/dtc/+/19606333

Bug: 239630493
Bug: 242096164
Change-Id: I3f6956ef6ce062eaebeac4deb02ece027c35e63c
Merged-In: I232155e7f7a54271a6a3e3a7cd91ed6bbabc051f