[Bug] Tab Key Functionality Broken: Prevents Indentation and Interferes with Interaction

Bug Description
The tab key does not work; I cannot indent for organizing my discussion with the model, and it toggles thinking instead. The tab key should only be used for file expansion or indentation.

Environment Info

• Platform: linux
• Terminal: vte-based
• Version: 2.0.8
• Feedback ID: 6925d77a-0578-4bd3-996f-0670687ef03f

Errors

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The primary focus of this issue is interacting with the tab key for indentation in the input using backslash enter for new lines. This issue is less about the file tabbing because that is discussed in other issues, and this issue is specific to indentation.