Enhancement: Add serif & sans-serif default font options

[yashjawale]

What?

Closes #54186

Why?

It is currently difficult to simply select "sans-serif" or "serif" for a font selection in the editor. Sometimes you don't want to use or load an external font.

How?

This PR adds the ability to select sans-serif or serif font in font selection dropdowns. After the theme default.

TODO: Update description after ready for review

Testing Instructions

Testing Instructions for Keyboard

Screenshots or screencast

Before	After

[github-actions]

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