043c59b075
## Description
This PR fixes `InkWell` overlay colors resolution.
The `InkWell` overlay color is resolved when the `InkWell` is either
focused, hovered , and/or pressed.
This resolution happens at two places:
- first when the highlight is created.
- then on each build, using the inner function named
`getHighlightColorForType`.
This second resolution should be aware of other current states (such as
selected) as it might impact the color resolution.
For instance, several Material styles have colors resolution define
similarly to:
dc44547d0d/packages/flutter/lib/src/material/date_picker_theme.dart (L982-L1006)
## Related Issue
Fixes [InkWell overlay colors aren't applied on MaterialState.selected
state](https://github.com/flutter/flutter/issues/159063)
First step for [Date picker overlay colors aren't applied on
MaterialState.selected state](Date picker overlay colors aren't applied
on MaterialState.selected state).
## Tests
Adds 3 tests.
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