Rework call to fetchLicenseCheckApprovalRule action

* Always call whe component mounted
* When approvalsApiPath not provided dispatch error from within action

ee/app/assets/javascripts/vue_shared/license_compliance/mr_widget_license_report.vue

@@ -109,14 +109,7 @@ export default {
     });
 
     this.fetchParsedLicenseReport();
-
-    /* 
-      If we render this widget from the "License" tab in the pipeline view,
-      then we don't fetch the approvals since we aren't in the Merge request context.
-    */
-    if (approvalsApiPath) {
-      this.fetchLicenseCheckApprovalRule();
-    }
+    this.fetchLicenseCheckApprovalRule();
   },
   methods: {
     ...mapActions(LICENSE_MANAGEMENT, [

ee/app/assets/javascripts/vue_shared/license_compliance/store/actions.js

@@ -115,6 +115,15 @@ export const receiveSetLicenseApprovalError = ({ commit }, error) => {
 export const fetchLicenseCheckApprovalRule = ({ dispatch, state }) => {
   dispatch('requestLicenseCheckApprovalRule');
 
+  /* 
+    If we call this action from the "License" tab in the pipeline view,
+    then we don't fetch the approvals since we aren't in the Merge request context.
+    Pipelines cannot have approval rules.
+  */
+  if (!state.approvalsApiPath) {
+    return dispatch('receiveLicenseCheckApprovalRuleError');
+  }
+
   return axios
     .get(state.approvalsApiPath)
     .then(({ data }) => {

ee/spec/frontend/vue_shared/license_compliance/mr_widget_license_report_spec.js

@@ -339,63 +339,6 @@ describe('License Report MR Widget', () => {
     expect(wrapper.find('#modal-set-license-approval')).not.toBeNull();
   });
 
-  describe('with approvalsApiPath prop set', () => {
-    it('should init store after mount calling fetchLicenseCheckApprovalRule', () => {
-      const actions = {
-        ...defaultActions,
-        setAPISettings: jest.fn(),
-        fetchLicenseCheckApprovalRule: jest.fn(),
-      };
-      mountComponent({ actions });
-
-      expect(actions.setAPISettings).toHaveBeenCalledWith(
-        expect.any(Object),
-        {
-          apiUrlManageLicenses: apiUrl,
-          licensesApiPath: defaultProps.licensesApiPath,
-          approvalsApiPath: defaultProps.approvalsApiPath,
-          canManageLicenses: true,
-        },
-        undefined,
-      );
-
-      expect(actions.fetchLicenseCheckApprovalRule).toHaveBeenCalledWith(
-        expect.any(Object),
-        undefined,
-        undefined,
-      );
-    });
-  });
-
-  describe('with approvalsApiPath prop unset', () => {
-    it('should init store after mount without calling fetchLicenseCheckApprovalRule', () => {
-      const props = {
-        ...defaultProps,
-        approvalsApiPath: '',
-      };
-
-      const actions = {
-        ...defaultActions,
-        setAPISettings: jest.fn(),
-        fetchLicenseCheckApprovalRule: jest.fn(),
-      };
-      mountComponent({ actions, props });
-
-      expect(actions.setAPISettings).toHaveBeenCalledWith(
-        expect.any(Object),
-        {
-          apiUrlManageLicenses: apiUrl,
-          licensesApiPath: defaultProps.licensesApiPath,
-          canManageLicenses: true,
-          approvalsApiPath: '',
-        },
-        undefined,
-      );
-
-      expect(actions.fetchLicenseCheckApprovalRule).not.toHaveBeenCalled();
-    });
-  });
-
   it('should init store after mount', () => {
     const actions = {
       setAPISettings: jest.fn(),
@@ -420,6 +363,12 @@ describe('License Report MR Widget', () => {
       undefined,
       undefined,
     );
+
+    expect(actions.fetchLicenseCheckApprovalRule).toHaveBeenCalledWith(
+      expect.any(Object),
+      undefined,
+      undefined,
+    );
   });
 
   describe('approval status', () => {

ee/spec/frontend/vue_shared/license_compliance/store/actions_spec.js

@@ -534,6 +534,23 @@ describe('License store actions', () => {
       const error = new Error('Request failed with status code 500');
       axiosMock.onGet(approvalsApiPath).replyOnce(500);
 
+      testAction(
+        actions.fetchLicenseCheckApprovalRule,
+        null,
+        { ...state, approvalsApiPath: '' },
+        [],
+        [
+          { type: 'requestLicenseCheckApprovalRule' },
+          { type: 'receiveLicenseCheckApprovalRuleError', payload: error },
+        ],
+        done,
+      );
+    });
+
+    it('dispatches request/receive error when no approvalsAPiPath is provided', done => {
+      const error = new Error('Request failed with status code 500');
+      axiosMock.onGet(approvalsApiPath).replyOnce(500);
+
       testAction(
         actions.fetchLicenseCheckApprovalRule,
         null,