Display WorkerRuns on metadata

The metadata panel should show a ⚙ icon next to all metadata that have a related WorkerRun. The existing WorkerRun summary component should have an extra icon-only boolean prop to hide the summary and only show the ⚙ icon so that it fits within the metadata table. This should affect both the MetadataPanel.vue and MarkdownMetadata.vue components as they separately display non-markdown and markdown metadata respectively.