Fix environment approvals

By convention, API calls take an id for project ID, not a projectId. E2E
tests would fix this.

ee/app/assets/javascripts/environments/components/environment_approval.vue

@@ -114,7 +114,7 @@ export default {
       this.loading = true;
       this.show = false;
       action({
-        projectId: this.projectId,
+        id: this.projectId,
         deploymentId: this.upcomingDeployment.id,
         comment: this.comment,
       })

ee/spec/frontend/environments/environment_approval_spec.js

@@ -188,7 +188,7 @@ describe('ee/environments/components/environment_approval.vue', () => {
         await button.trigger('click');
 
         expect(api).toHaveBeenCalledWith({
-          projectId: '5',
+          id: '5',
           deploymentId: environment.upcomingDeployment.id,
           comment: 'comment',
         });