[5.x] Refactor input component styles

[Roene-JustBetter]

We don't need importants here this will break the ring on the inputs.

[jordythevulder]

I can remember that the important was necessary when you used tailwind in combination with the tailwind form plugin. That added custom css on inputs also targeting the rings. But maybe that has changed. Can you double check that?

[jordythevulder]

See other comment

[Roene-JustBetter]

I can remember that the important was necessary when you used tailwind in combination with the tailwind form plugin. That added custom css on inputs also targeting the rings. But maybe that has changed. Can you double check that?

Checked it with @tailwindcss/forms inside my project and without the !important it is working. With the !important it is not working.

[royduin]

Let's wait for RAP-1908 so we can see possible visual differences

[royduin]

Tests are working again in the core, for other packages including Confira: RAP-2005

tldr; let's wait a bit more