Add trackNum to UnsupportedAppUsage annotation of createFromFamiliesWithDefault

We won't change anything of the reflection access of creatFromFamiliesWithDefault.
So we only add the bug number for tracking purpose.
And the TODO is removed because the corresponding ticket is marked as fix.

Bug: 123768395
Test: atest TypefaceTest
Change-Id: I802392859fb611ea558d0c06fc0bd77f5a38c439