metrics: Enhance the o11y of TiFlash storage layer (release-7.5)#10286

ti-chi-bot[bot] merged 7 commits intopingcap:release-7.5pingcap/tiflash:release-7.5from

JaySon-Huang:add_wide_table_metrics_75JaySon-Huang/tiflash:add_wide_table_metrics_75Copy head branch name to clipboard