[Authentication] Order of inputs

### Severity

- P3 - Medium (Minor functionality affected)

### MCP Server Creation Source

- MCP Server in Logic Apps

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### Issue description:
- Friction with input placements. Placing the **API key** input field below **Method** field create visually jumping and friction.
- Authentication is always visible, but the key generation input only appears when relevant.
- Forms are read vertically.
- Introducing the conditional input below Authentication which is always present prevents visual jumping or attention breaks.

### Recommendation:
- Place API keys input below Authentication input field.