…@compiled/jest` (#1656)

* Allow `@compiled/babel-plugin`'s `increaseSpecificity` to work with `@compiled/jest`.
tl;dr: if you have `increaseSpecificity: true` set, you get styles such as `._18u0u2gc:not(#\\9){margin-left:var(--ds-space-100,8px)}` which will never match `._18u0u2gc`

I could not think of a nice way to sneak a test in for this without trying to overhaul jest config entirely, so I did not…but happy to take any advice there.

* chore: consolidate INCREASE_SPECIFICITY_SELECTOR

* Update packages/utils/src/increase-specificity.ts comment

* Copy and paste `INCREASE_SPECIFICITY_SELECTOR` to avoid circular TS references.

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* Fix handling of content property

* Add tests and improve docs

* Fix typo in test

* feat: add atlaskit css as a default import source

* chore: changeset

* chore: add test

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…1661)

* Replace increase specificity selector as JSDOM breaks with `#\\9`.

Without this, `jsdom` (via `nswapi`) throws an error: `SyntaxError: \8 and \9 are not allowed in strict mode.`

Refer to dperini/nwsapi#92.

We're instead using what stylex uses for specificity: https://github.com/facebook/stylex/blob/c9216385d40c53612848040ab4d96ff133304203/packages/stylex/src/StyleXSheet.js#L352C16-L352C28
```diff
-._u5f3ftgi:not(#\\9){padding-right:8px}
+._u5f3ftgi:not(#\\#){padding-right:8px}
```

* Fix toHaveCompiledCss increasedSpecificity comparison with a target

* Reduce @compiled/jest version bump to a patch.

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* fix: preserve custom property value casing

* chore: changeset

* test: add tests for other styling apis

* chore: changeset for other packages

* Add media query sorting implementation

* Improve documentation and tests

* Merge postcss sortAtRulePseudos and sortAtomicStyleSheet plugins, so that media query sorting runs regardless of whether stylesheet extraction is enabled

* Update snapshot tests due to at-rule ordering change

* Add changeset

* Rename sort-atomic-style-sheet tests to sort-pseudo-selectors for clarity

* Fix bug in sorting function

* Fix @compiled/react tests

* Update changeset to clarify that this is a breaking change

* Add other Compiled packages to changeset

* Improve function naming and comments

* Add sortAtRules option for turning off media query sorting, improve changeset

* Improve comments, remove superfluous regex

* Add basic length unit normalisation

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* Fix 'as const' expressions causing build error

* Add changeset

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* fix: fixes jest matcher kebab casing css vars

* chore: changeset

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* Add ElementType to JSX namespace

* changeset

---------

Co-authored-by: Jordan Overbye <joverbye@atlassian.com>

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