Adds support for entering math inside number widgets in vue mode

Migrates components to simple html elements (div and button) by
borrowing styling from the (reverted) reka-ui migration in #6985. The
existing (evil) litegraph eval code is extracted as a utility function
and reused.
This PR means we're entirely writing our own NumberField.
Also adds support for scrubbing widgets like in litegraph

### Known Issue
- Scrubbing causes text to be highlighted, ~~starting a scrub from
highlighted text will instead drag the text~~.
- It seems this can only be prevented with `pointerdown.prevent`, but
this requires a manual `input.focus()` which does not place the cursor
at location of mouse click.
(Obligatory: _It won't do you a bit of good to review math_)
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7759-Implement-vue-math-2d46d73d365081b9acd4d6422669016e)
by [Unito](https://www.unito.io)
---------
Co-authored-by: github-actions <github-actions@github.com>
Co-authored-by: DrJKL <DrJKL0424@gmail.com>
With reactivity fixed, control widgets would apply twice. This is fixed
by using the litegraph implementation.
Also adds control widget support for combos
Followup to #7539.
Known Issue:
- Primitive node do not have litegraph callbacks properly setup. As a
result, they will display an updated value when modified by control
widgets. Fixing this will requires a larger, separate PR
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7550-Fix-doubled-control-application-2cb6d73d365081739a2fc40fdfb3630e)
by [Unito](https://www.unito.io)