Change type import rule (#13751)

Forcing "type" to be explicit, works best will rollup on the frontend to
exclude depdendencies

packages/twenty-server/src/engine/api/mcp/utils/get-json-schema.ts

@@ -1,5 +1,5 @@
 import { validationMetadatasToSchemas } from 'class-validator-jsonschema';
-import { JSONSchema7 } from 'json-schema';
+import { type JSONSchema7 } from 'json-schema';
 
 class ValidationSchemaManager {
   private static instance: ValidationSchemaManager;