Merge "Add handling for first-time mtu exchange value" into main am: 1705e5a3

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2815054



Change-Id: I4c77ba6847893f30d8fd348596ccb15554027ea3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>