Reworked the internals of DialerPhoneNumber.

It turns out the storing the libphonenumber representation of the number is not particularly useful because even formatting these objects cannot be done on the main thread. Rather than propagate the requirement of using PhoneNumberUtil (and background threads by extension) in the call log UI, we now just store a dialer-normalized version of the number which contains all information required by the UI in a way that allows us to avoid any background work in the UI code.

Bug: 72563861
Test: existing
PiperOrigin-RevId: 183463907
Change-Id: I4bdadaccb7a84033b3c72c54fe3833064f587ee3