[Invisalign2] Encapsulate the following methods

- tBTM_SEC_CB::IsDeviceEncrypted
- tBTM_SEC_CB::IsLinkKeyAuthenticated
- tBTM_SEC_CB::IsDeviceAuthenticated
- tBTM_SEC_CB::IsLinkKeyKnown

Bug: 301661850
Test: m com.android.btservices
Flag: EXEMPT, mechanical refactor
Change-Id: Ie8b50ef566c40a80afa7b0b968dd9ced2df81213