BREAKING: add preset name mandatory key

[astahmer]

📝 Description

Add a name mandatory key in Preset to make it easy to target one specifically

💣 Is this a breaking change (Yes/No):

yes. types will throw.
the runtime is not affected YET. we'll make use of that preset name soon and things might break at this point if you haven't added one.

---

simplify the internal logic of merging config/presets

[changeset-bot]

🦋 Changeset detected

Latest commit: c22a40c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 20 packages

Name	Type
@pandacss/types	Minor
@pandacss/dev	Minor
@pandacss/config	Minor
@pandacss/core	Minor
@pandacss/fixture	Minor
@pandacss/generator	Minor
@pandacss/logger	Minor
@pandacss/node	Minor
@pandacss/parser	Minor
@pandacss/preset-atlaskit	Minor
@pandacss/preset-base	Minor
@pandacss/preset-open-props	Minor
@pandacss/preset-panda	Minor
@pandacss/studio	Minor
@pandacss/token-dictionary	Minor
@pandacss/postcss	Minor
@pandacss/astro-plugin-studio	Minor
@pandacss/extractor	Minor
@pandacss/is-valid-prop	Minor
@pandacss/shared	Minor

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