Fix: Release drafter uses auto-calculated next version instead of package.json

[Copilot]

Description

Release drafter was creating drafts tagged with the current package.json version (3.1.8) instead of calculating the next version from PR labels. Workflow explicitly overrode release-drafter's version resolution by passing version and tag parameters from package.json.

Changes:

• Reordered steps: release-drafter now runs before changelog extraction
• Removed explicit version and tag parameters to enable automatic version calculation
• Changelog extraction now uses release_drafter.outputs.tag_name instead of package.json
• Added fallback to extract [Unreleased] section when calculated version not yet in CHANGELOG
• Enhanced AWK script for case-insensitive "Unreleased" matching

Before: Draft release tagged as 3.1.8 (current version)
After: Draft release tagged as 3.1.9 (next version, calculated from git tags + PR labels)

Net change: -5 lines

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Refactor (code change that neither fixes a bug nor adds a feature)

Checklist

• I have added tests that prove my fix is effective or my feature works
• I have updated the documentation accordingly
• I have updated the CHANGELOG
• My changes do not introduce breaking changes, or breaking changes are documented

Original prompt

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This section details on the original issue you should resolve

<issue_title>[Bug]: Version Releaser Doesn't Auto-Tag</issue_title>
<issue_description>### Description

The tag for the version drafter is some hash, it's not the next version or latest unreleased version in the CHANGELOG

Steps to Reproduce

1. Go to Version Auto-Draft

Expected Behavior

Tag is latest unreleased version

Actual Behavior

Tag is some hash

Unity Version

2021.3 LTS

Package Version

3.1.7

Platform

• Editor
• Windows
• macOS
• Linux
• iOS
• Android
• WebGL
• Other

Additional Context

No response</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [Bug]: Version Releaser Doesn't Auto-Tag #197

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