TextStyle support different inherit lerp

[xu-baolin]

Fixes #103864
Fixes #89947
Fixes #70281
Fixes #43358
Fixes #40514

I can not find why we do not support different inherit lerp, so try to support to see if this will break something.

[rydmike]

@xu-baolin, agreed, I think it should work too (I had forgotten that I even demonstrated that in #89947 - lol), so yes I could not see a reason why not either. But if it does not for some reason work OK, I think in that case the text style could just be changed without lerping, document that that is how it is when you do that. It is a rather rare use case. It would be much better than current assert error.

[LongCatIsLooong]

There's a similar attempt to fix #43358.

See this comment: #43470 (comment)

This will lead to really ugly transitions. I think we should instead fix our defaults so this doesn't become a problem.

[rydmike]

@LongCatIsLooong Since this was apparently rejected, what is the solution and when? Have things a bit on hold that needs this to work. The use case is being able to toggle theme between correct M2 2018 Typography and new M3 2021 Typography without the issue current behaviour has, as shown here #103864