87813 [ci.yaml] Empty commit to verify LUCI configs (cla: yes)

87814 [ci.yaml] Fix firebase recipe, xcode version, and web_benchmarks (cla: yes, waiting for tree to go green)

87818 Reland “update ScrollMetricsNotification (#87421)” (framework, cla: yes, f: cupertino)

87824 Fix null check for content dimensions in page getter (framework, cla: yes, waiting for tree to go green)

87829 Roll Engine from c0e59bc7b65e to 4fef55db1031 (12 revisions) (cla: yes, waiting for tree to go green)