Always send CLIR_DEFAULT if no user setting has been set

Previously, we would only send CLIR updates when the network
was attached if  the CLIR mode was not default. This causes issues
on some radios, where the CLIR mode is not reset to the default
when a SIM change occurs.

Bug: 176112154
Test: atest FrameworksTelephonyTests
Change-Id: I2b8e4cb5b61c0e254bec8267b622e5824187de5a