csis: Fix bonding dual mode devices

Failing scenario fixed in this patch
1. ANdroid bonded with Dual Mode device over BR/EDR and later over LE
   using CTKD
2. CSIS having cached Advertising Reports, sends to Java RPA of already
   bonded device as a next set member
3. The above leads to read second set member being no bonded.

Bug: 290914667
Test: atest bluetooth_csis_test   for regression
Test: manual 10 times pairing in the raw
Tag: #feature
Change-Id: I7e543ff4feeb4dab650bdeb5bb60593ba065c1f8