[Backport 27.0.0] Web console: Page downloader, and fix JSON error resetting (#14712)#14732

abhishekagarwal87 merged 1 commit intoapache:27.0.0apache/druid:27.0.0from

AmatyaAvadhanula:backport-14712AmatyaAvadhanula/druid:backport-14712Copy head branch name to clipboard