Emoji Picker should insert unicode characters in Message Composer

[MartinSchoeler]

Description:

Whenever the user adds an emoji using the emoji picker, the result should be an unicode character being added to the message composer, only show the shortcode as fallback for custom emojis or emojis that don't have an unicode counterpart

Steps to reproduce:

1. Open emoji picker
2. Select an emoji

Expected behavior:

An unicode emoji character should be added. (Example 🙈)

Actual behavior:

A shortname is added. (Example 🙈)

• Desktop App or Browser Version:
• Operating System:

Additional context

Relevant logs:

[coderabbitai]

⚠️ Possible Duplicate Issue(s)

• Emoji Picker Inserts Shortcode Instead of Actual Emoji in Chat Composer #35460

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