fix(GlInfiniteScroll): Fix GlInfiniteScroll not firing bottomReached event in some cases

mentioned in commit 1e127331

mentioned in merge request gitlab-org/gitlab-services/design.gitlab.com!2844 (merged)

mentioned in merge request status-page!507 (merged)

mentioned in merge request gitlab!86437 (merged)

mentioned in merge request gitlab!86837 (merged)

mentioned in merge request gitlab-org/gitlab-services/design.gitlab.com!2846 (merged)

mentioned in merge request status-page!509 (merged)

mentioned in merge request gitlab-docs!2632 (merged)

mentioned in merge request gitlab-docs!2634 (merged)