Cannot read property 'scrollIntoView' of undefined

https://sentry.gitlap.com/gitlab/gitlabcom-clientside/issues/31701/

Cannot read property 'scrollIntoView' of undefined

TypeError: a[0] is undefined
  at list (./merge_request_tabs.js:296:12)
...
(1 additional frame(s) were not displayed)

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As reported by @rspeicher, https://gitlab.slack.com/archives/C0GQHHPGW/p1495636218455726

I think it's because it's an anchor link to a discussion that's not on the diff

added diff regression labels

changed milestone to %9.2

assigned to @MadLittleMods

added Next Patch Release label

mentioned in merge request !11700 (merged)

mentioned in commit 1a896f71

mentioned in commit 07a3a69c

closed via merge request !11700 (merged)

mentioned in commit a59165e7

mentioned in issue #32962 (closed)

mentioned in commit 0d554df6

mentioned in merge request !14785