Catch IllegalArgumentException when unbinding CallRedirectionServiceConnection

Wrap the `mContext.unbindService` call in a try-catch block to handle `IllegalArgumentException`. This can occur if the service connection isn't registered when the timeout occurs, preventing a crash.

Bug: 438408401
Flag: EXEMPT bug fix
Test: m Telecom
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:615a452b1eb9a1165b6892b715ca9acb39c9fc48)
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:f8423dc9f2f04530b2c3c9fba111a6a826ecd7ac
Merged-In: I9494b1bf209579125b30fb859ad62cd58b5dffd7
Change-Id: I9494b1bf209579125b30fb859ad62cd58b5dffd7