edit file window should not block scrolling to earlier in the session

### Describe the feature or problem you'd like to solve

when there is an edit file action asking for permission it shows me only the file edit and blocks scrolling up to see the rest of the conversation.

### Proposed solution

the file edit should be inline showing me the diff and asking for permissions, but still allow me to scroll freely up to earlier in the session

### Example prompts or workflows

_No response_

### Additional context

_No response_

Start by reproducing the edit-file permission flow in the CLI and trace the session rendering and scrolling behavior. The work is done when the edit is shown inline with its diff and permission prompt while scrolling to earlier conversation remains available.

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