Fix showing HTML content in view file tooltip

app/assets/javascripts/diffs/components/diff_file_header.vue

@@ -112,9 +112,7 @@ export default {
       const truncatedContentSha = _.escape(truncateSha(this.diffFile.content_sha));
       return sprintf(
         s__('MergeRequests|View file @ %{commitId}'),
-        {
-          commitId: `<span class="commit-sha">${truncatedContentSha}</span>`,
-        },
+        { commitId: truncatedContentSha },
         false,
       );
     },

spec/javascripts/diffs/components/diff_file_header_spec.js

@@ -611,6 +611,9 @@ describe('diff_file_header', () => {
           vm = mountComponentWithStore(Component, { props, store });
 
           expect(viewFileButton().getAttribute('href')).toBe('view-path');
+          expect(viewFileButton().getAttribute('data-original-title')).toEqual(
+            `View file @ ${props.diffFile.content_sha.substr(0, 8)}`,
+          );
         });
 
         it('should not render external url view link if diff file has no external url', () => {