Fields in /mcp add may not be visible when typing into them

### Describe the bug

When adding an MCP server via `/mcp add`, the list of fields is long and the first field may not be visible (depending on the font size and size of terminal) as I type into them.

For example, the "Server name" field is not visible on this page. I can scroll up to it, but as soon as I type it will seek to the end of the terminal.

### Affected version

0.0.327 Commit: 0cbec74

### Steps to reproduce the behavior

1. Run `/mcp add`.
2. Type into initial field(s).

### Expected behavior

_No response_

### Additional context

_No response_