fix(map.lic): v2.1.4 various GTK/ruby crashes

[mrhoribu]

Updated version to 2.1.4 and added changelog entries for bug fixes and improvements.

Summary by CodeRabbit

• Bug Fixes

  • Prevented crashes caused by signal handlers returning non-Boolean values.
  • Stabilized menu, dialog, and dynamic menu behavior to avoid premature cleanup.
  • Hardened shutdown to prevent crashes during application teardown.
  • Improved memory management to avoid premature finalization of UI elements.

• Documentation

  • Added notes on signal-handler invariants for more robust event handling.

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@scripts/map.lic`:
- Around line 548-550: The comment above the instance variable `@_dialog_gc`
contains a non-ASCII em-dash which trips RuboCop's Style/AsciiComments; edit the
comment that precedes `@_dialog_gc` to replace the em-dash "—" with an ASCII
equivalent (e.g., "--" or "-") so the comment reads using only ASCII characters
while leaving the `@_dialog_gc` array and surrounding logic unchanged.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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Reviewing files that changed from the base of the PR and between a498adc and b400c31.

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• scripts/map.lic

[mrhoribu]

@coderabbitai remove all previous comments and review in full

[coderabbitai]

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@mrhoribu Done! My previous comment has been minimized and a full review is now underway. Results will be posted shortly. 🐇✨