feat(css_parser): allow multiple semicolons after declaration

[fireairforce]

Summary

closes: #3836

I introduce a new syntax for css parser which named CSS_EMPTY_DECLARATION, you can see it at my change at css.ungram, the CSS_EMPTY_DECLARATION just use to deal the multiple ; at CSS_DECLARATION_LIST which like JS parser's JS_EMPTY_STATEMENTS:

let a = 1;;;;;

Test Plan

I add test case for biome_css_parser like:

.a {
  color: red;;;;
  color: blue;
}

And update some test case of biome_css_formatter.

[codspeed-hq]

CodSpeed Performance Report

Merging #4315 will not alter performance

_{Comparing fireairforce:fix-3836 (26e7fa8) with main (d59d43d)}

Summary

✅ 101 untouched benchmarks

[fireairforce]

this mr is ready for review~

[ematipico]

A couple of things:

• could you start filling the PR template we provide, especially the part regarding the tests? We don't ask for a lot of info, and since you've been contributing a lot lately, I believe it's only fair
• have you considered the solution proposed by Denis? 🐛 CSS parser does not recognize multiple semicolons after a declaration #3836 (comment)

[fireairforce]

ok, i will update the template later. i try to update the css.ungram like:

CssDeclarationWithSemicolon =
    declaration: CssDeclaration
    ';'*

But it will get an panic like:

And I've looked elsewhere and haven't seen similar writing methods. So i refer the statement JS_EMPTY_STAMENT of js parser and add a CSS_EMPTY_DECLARATION here.

[ematipico]

One thing missing, then we can merge it

[ematipico]

Is this a typo? What does "semion" mean?

[fireairforce]

yes, a typo, semicolon here, i will update later

[ematipico]

This must be implemented

[fireairforce]

sorry, i forget here, i implement this method and add a test case for this at declaration.css test file

[ematipico]

Amazing work @fireairforce, thank you very much for this contribution! ❤️