fix: reload cannot load hologram

[ChengZhiMeow]

📋 Description

This PR fixes a critical bug where executing the /fancyholograms reload command in certain situations causes all holograms to disappear and not be reloaded.

✅ Checklist

• My code follows the project's coding style and guidelines
• I have tested my changes locally and they work as expected
• I have added necessary documentation (if applicable)
• I have linked related issues using Fixes #issue_number or Closes #issue_number
• I have rebased/merged with the latest main branch

🔍 Changes

• Fixed reload cannot load hologram

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🧪 How to Test

1. Install the plugin and start the server.
2. Create a hologram
3. Execute the reload command: /fancyholograms reload.

[OliverSchlueter]

lgtm