We recommend using `initWithDefaults` and we should follow the recommendation. This change removes all usage of `init` within MDC components in order to let us remove that initializer from the public surface.
PiperOrigin-RevId: 302958447
This is an attempt at taking the existing text controls example and making it A) abstract, so that similar example can be made for text areas and chip fields, and B) fit in a scrollview, so all of the example is accessible in large content size categories.
It's fully functional, but probably not done changing.
Closes#9359.
Here's a gif:
