fix(css-var): make cssVar be able to handle slash as token name (#983)

[custardcream98]

Closes #983

📝 Description

• The / character has been added to the escRegex in css-var.ts to enable handling token names with slashes.
• A test case for special characters has been added.

⛳️ Current behavior (updates)

Currently, it is not possible to use a slash (/) as a token name.

🚀 New behavior

With this pull request, it becomes possible to use a slash (/) as a token name.

💣 Is this a breaking change (Yes/No):

Nope

📝 Additional Information

As mentioned in the documentation, tokens should be used with the token() function.

[changeset-bot]

🦋 Changeset detected

Latest commit: 85afe09

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

This PR includes changesets to release 25 packages

Name	Type
@pandacss/shared	Patch
@pandacss/dev	Patch
@pandacss/core	Patch
@pandacss/generator	Patch
@pandacss/node	Patch
@pandacss/parser	Patch
@pandacss/studio	Patch
@pandacss/token-dictionary	Patch
@pandacss/language-server	Patch
@pandacss/extension-shared	Patch
panda-css-vscode	Patch
@pandacss/postcss	Patch
@pandacss/types	Patch
@pandacss/ts-plugin	Patch
@pandacss/astro	Patch
@pandacss/config	Patch
@pandacss/error	Patch
@pandacss/extractor	Patch
@pandacss/fixture	Patch
@pandacss/is-valid-prop	Patch
@pandacss/logger	Patch
@pandacss/preset-atlaskit	Patch
@pandacss/preset-base	Patch
@pandacss/preset-panda	Patch
@pandacss/vsix-builder	Patch

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