Change DECIMAL_REGEX to support floats that start with a dot

[fabian-hiller]

Fix #1072

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
valibot	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 17, 2025 0:54am

[Copilot]

Pull Request Overview

This pull request enhances the DECIMAL_REGEX to support floats that start with a dot, addressing issue #1072.

• Updates the DECIMAL_REGEX in library/src/regex.ts with a revised regular expression and an ESLint disable comment.
• Expands the test suite in library/src/actions/decimal/decimal.test.ts to validate floats starting with a dot and with sign prefixes.
• Updates the changelog in library/CHANGELOG.md to document the changes.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
library/src/regex.ts	Updated DECIMAL_REGEX to support floats starting with a dot with an ESLint comment for false positives.
library/src/actions/decimal/decimal.test.ts	Added new tests for floats starting with a dot and with a sign; modified test names accordingly.
library/CHANGELOG.md	Updated changelog to reflect the change in DECIMAL_REGEX functionality.

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commit: 99939ea