Reland: Fix an OOB write bug in attp_build_value_cmd

Bug: 295887535
Bug: 315127634
Test: m com.android.btservices
Test: atest net_test_stack_gatt
Ignore-AOSP-First: security
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:4ae5e736813bf2928bfc8c71e3dacf3b78394046)
Merged-In: I291fd665a68d90813b8c21c80d23cc438f84f285
Change-Id: I291fd665a68d90813b8c21c80d23cc438f84f285