fix: add internal microservice request marker

Author: MatthewPattell

__tests__/services/abstract-microservice-test.ts

@@ -340,6 +340,7 @@ describe('services/abstract-microservice', () => {
     expect(data.params).to.deep.equal({
       ...params,
       payload: {
+        isInternal: true,
         sender: 'tests',
         senderStack: ['tests'],
       },

src/services/abstract-microservice.ts

@@ -421,6 +421,7 @@ abstract class AbstractMicroservice {
 
     _.set(requestParams, 'payload.sender', sender);
     _.set(requestParams, 'payload.senderStack', [...(data.payload?.senderStack ?? []), sender]);
+    _.set(requestParams, 'payload.isInternal', data.payload?.isInternal ?? isInternal);
 
     const request = new MicroserviceRequest({
       ...(shouldGenerateId || reqId ? { id: reqId ?? uuidv4() } : {}),