Make highlight text colour respect the the rather than M3 default

[nicbell]

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Currently when you set your the primary colors like this:

        <item name="colorPrimary">@color/myColorPrimary</item>
        <item name="colorOnPrimary">@color/myColorOnPrimary</item>
        <item name="colorPrimaryContainer">@color/myColorPrimaryContainer</item>
        <item name="colorOnPrimaryContainer">@color/myColorOnPrimaryContainer</item>

The primary color changes for most M3 views. One thing that glaringly doesn't change is the text highlight color as it hard-code to @color/m3_sys_color_light_primary rather than pointing at a theme token such as ?colorPrimary.

In my app my primary color is blue but the text is highlighting in a shade of purple.

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[nicbell]

Ah I can see it was raised before. It's a strange to mix theme tokens and direct references to Material values.

#2452
#2808