[Enhancement] Remove requirement to have an existing empty Logic App

### Severity

P2 - High (Major functionality broken)

### MCP Server Creation Source

MCP Server in Api Center

### Describe the Bug with repro steps

Currently, we require an empty Logic App to be selected for the MCP wizard to proceed. We should remove this requirement to avoid customer friction.

### Screenshots or Videos

_No response_

### Environment

LAMCP

### Are you experiencing a regression?

_No response_

### Additional context

_No response_