[Invisalign2] rename the following 2 fields in tSMP_CB

- secure_connections_only_mode_required
- le_secure_connections_mode_is_used

Bug: 301661850
Test: m com.android.btservices
Flag: EXEMPT, no-op
Change-Id: I23b70d7570a9a7b94307967834a7ae602ff752ea