[automerge] Add size check on PPS#policy 2p: 18df516b02

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Wifi/+/22633474

Bug: 275340417
Change-Id: I48b78082d1bdfc24d3d7a0ffac72eb5db3c4dc6c
Merged-In: Iede626004a1ea46f47b185777c97794e4d3ded4e