Copy the keys when re-pairing with a new RPA/IRK

With the refactor in aosp/2817298, the ble keys are dropped
in the consolidation process, which causes reconnection issues
as reported in b/315203403

This change makes sure the the BLE keys are correctly copied.

Bug: 315203403
Bug: 315487763
Test: m com.android.btservices
Test: manual | pair with BLE device with RPA1 (generated with IRK1) and repair it with RPA2 generated (by IRK2), re-pairing and reconenction work
Flag: EXEMPT, one-line bug-fix for a regression | critical fix that needs to be included in Q1-2024
Change-Id: Ia9c99681b3f9404dccd0f249ad0d6ab8848dc2f5