fix: add ts-expect-error for optional inspector import

Author: Pederzh

packages/mcp-use/src/server/mcp-server.ts

@@ -319,6 +319,7 @@ export class McpServer {
 
     // Try to dynamically import the inspector package
     // Using dynamic import makes it truly optional - won't fail if not installed
+    // @ts-expect-error - Optional peer dependency, may not be installed
     import('@mcp-use/inspector')
       .then(({ mountInspector }) => {
         // Auto-connect to the local MCP server at /mcp