Multi-character chat {{char}} placeholders all refer to main character instead of the correct characters

[rankcody]

Describe the bug
When having a group chat with multiple characters, any {{char}} placeholders in the characters' definitions will refer to the main character's name, even if the {{char}} placeholder is being used in a different character. So, if I have a chat with Alice, Bob, and Charlie, any {{char}} placeholders in Bob or Charlie will erroneously refer to Alice.

To Reproduce
Steps to reproduce the behavior:

1. Make group chat with multiple characters.
2. Check prompt preview to see that any {{char}} placeholders in the character definitions all refer to the main character instead of the correct characters.

Expected behavior
{{char}} placeholders should refer to the card that they're used in, not the main character.

Screenshots
Screenshot. In this image, the bottom character is supposed to be Hu Tao, but all the {{char}} placeholders refer to Repulza, the main character.

Desktop (please complete the following information):

• OS: ChromeOS
• Browser: Chrome
• Version 124.0.6367.225 (Official Build) (64-bit)