NoMan: Add 3s timeout in matchesCallFilter()

In Priority mode, NoMan can block the telecom Ringer
indefinitely when looking up the caller contact details via
ContactsProvider.

Fix this by introducing a 3s timeout and assume the call
matches the call filter when the timeout is hit.

Bug: 17598245
Change-Id: Ia0893cf203e6ffd943c749719ebb9e0f0958eb01