fix: apply migration result

Author: gregnr

packages/mcp-server-supabase/src/server.test.ts

@@ -667,7 +667,7 @@ describe('tools', () => {
       },
     });
 
-    expect(result).toEqual(undefined);
+    expect(result).toEqual({ success: true });
 
     const listMigrationsResult = await callTool({
       name: 'list_migrations',

packages/mcp-server-supabase/src/tools/database-operation-tools.ts

@@ -88,6 +88,8 @@ export function getDatabaseOperationTools({
           name,
           query,
         });
+
+        return { success: true };
       },
     }),
     execute_sql: injectableTool({