fix: Make GlDrawer height aware of positioning

mentioned in commit 2b349a12

mentioned in merge request rpadovani/daintree!307 (merged)

mentioned in merge request gitlab!45288 (merged)

mentioned in merge request gitlab-org/gitlab-services/design.gitlab.com!2119 (merged)

mentioned in merge request status-page!127 (merged)

mentioned in merge request gitlab-docs!1245 (merged)

mentioned in merge request gitlab!45424 (merged)

mentioned in merge request gitlab-org/gitlab-services/design.gitlab.com!2124 (merged)

mentioned in merge request status-page!129 (merged)

mentioned in merge request gitlab-docs!1270 (merged)