Update text selection highlight color

[astone123]

What would you like?

During work on #21865, it came up that the text selection color doesn't match with what we have in our mockups. The color of the highlighted text that is selected in text inputs throughout the application should be indigo-100 according to this comment

This is what the selection color currently looks like:

Why is this needed?

No response

Other

We can use the ::selection psudo-element to change the background color for selected text. This might involve adding a utility for Windi

[lmiller1990]

Can just use ::selection https://braydoncoyer.dev/blog/change-text-highlight-color-with-css