[MTK] [CONVERGENCE] [ALPS07807894] ring timer not cancel

[Detail] ring timer should be canceled when
incoming/outgoing 3-way canceled before connected

[Solution] cancel the ring timer

Migration Patch: 5672014, 4480998

Feature: BT HOST SW
Bug: 328847401
Fix: 328847401
Test: m com.android.btservices
Flag: EXEMPT, minor bug fix
Change-Id: Iaf69c630e276db79b424afa6ebd3b2d3c486ff72