chore: enable esModuleInterop

- Enable esModuleInterop in tsconfig.release.json for better CJS/ESM interop.
- Update unit tests and source code to use default imports for CJS modules (fs, nock, jsonwebtoken, express, etc.) to align with new compiler settings.

Author: taeold

mocha/setup.ts

@@ -3,4 +3,4 @@ import chaiAsPromised from "chai-as-promised";
 import nock from "nock";
 
 chai.use(chaiAsPromised);
-nock.disableNetConnect();
+nock.disableNetConnect();

src/v2/providers/https.ts

@@ -48,8 +48,7 @@ import * as options from "../options";
 import { withInit } from "../../common/onInit";
 import * as logger from "../../logger";
 
-export { HttpsError };
-export type { Request, CallableRequest, CallableResponse, FunctionsErrorCode };
+export { Request, CallableRequest, CallableResponse, FunctionsErrorCode, HttpsError };
 
 /**
  * Options that can be set on an onRequest HTTPS function.