Fixed IDE jobs empty state showing when loading

Closes #47766

app/assets/javascripts/ide/components/jobs/detail.vue

@@ -122,6 +122,7 @@ export default {
       @scroll="scrollBuildLog"
     >
       <code
+        v-show="!detailJob.isLoading"
         class="bash"
         v-html="jobOutput"
       >

spec/javascripts/ide/components/jobs/detail_spec.js

@@ -62,6 +62,11 @@ describe('IDE jobs detail view', () => {
     expect(vm.$el.querySelector('.build-loader-animation').style.display).toBe('');
   });
+  it('hides output when loading', () => {
+    expect(vm.$el.querySelector('.bash')).not.toBe(null);
+    expect(vm.$el.querySelector('.bash').style.display).toBe('none');
+  });
+
   it('hide loading icon when isLoading is false', done => {
     vm.$store.state.pipelines.detailJob.isLoading = false;