Keep Emoji Picker Open for Consecutive Emoji Selection

[PritamMishra065]

Brief Title

Keep Emoji Picker Open for Consecutive Emoji Selection

Acceptance Criteria fulfillment

• Remove setEmojiOpen(false) from the handleEmojiClick callback in ChatInputFormattingToolbar.js.
• Allow users to select multiple emojis consecutively without reopening the picker.
• Ensure the picker still closes when clicking outside, toggling the emoji button, or sending the message.

Fixes #

Video/Screenshots

PR Test Details

• Open EmbeddedChat and click the Emoji icon in the toolbar.
• Select multiple emojis consecutively, such as 😀😅❤️.
• Verify that the Emoji Picker remains open after each selection.
• Click outside the picker and verify that it closes.
• Toggle the emoji button and verify that the picker closes.
• Send a message and verify that the picker closes as expected.

Note: The PR will be ready for live testing at https://rocketchat.github.io/EmbeddedChat/pulls/pr-#1363 after approval. Contributors are requested to replace #1363 with the actual PR number.