Extended le_impl capabilities for testing

Bug: 242901573
Test: atest bluetooth_test_gd_unit bluetooth_test_gd
Tag: #refactor
BYPASS_LONG_LINES_REASON: Bluetooth likes 120 lines
Ignore-AOSP-First: Cherry-pick

Merged-In: I39fa842d8d5ba6ab56da127d9d1ca3c9e29c0ae8
Change-Id: I39fa842d8d5ba6ab56da127d9d1ca3c9e29c0ae8