docs: cut 6.1.0 versions for docs, admin_docs, developer_docs, components

Snapshots all four versioned Docusaurus sections at v6.1.0. Built on
top of the version-cutting tooling work in chore/docs-cut-6.1.0-versions
so the snapshot benefits from:

- Auto-gen refresh before snapshotting (database pages from engine
  spec metadata, API reference from openapi.json, component pages
  from Storybook stories) — captured at the SHA we cut from rather
  than whatever happened to be on disk.
- Data-import freeze: country list, feature flag table, database
  diagnostics, and component metadata are copied into snapshot-local
  `_versioned_data/` dirs so the historical version doesn't silently
  mutate when the source files change.
- Depth-aware import-path rewriter that handles deeply-nested
  component MDX files referencing `../../../src/` from the snapshot.

Versioning behavior: `lastVersion` stays at `current` for every
section, so the canonical URLs (`/docs/...`, `/admin-docs/...`,
`/developer-docs/...`, `/components/...`) continue to render content
from master. The `current` version is consistently labeled "Next"
with an `unreleased` banner, and `6.1.0` is a historical pin
accessible only via its explicit version segment.

Component playground: previously `disabled: true` in versions-config.json,
now enabled and versioned. The plugin block in docusaurus.config.ts
was already gated only by the `disabled` flag, so no other code
changes were needed to bring it back online.

The frozen `databases.json` in the snapshot is the canonical 80-database
artifact from the latest committed state in master (preserved by the
generator's input-hash cache), not a fallback regenerated from a
local Flask environment.

docs/developer_docs_versioned_docs/version-6.1.0/api/get-table-metadata.api.mdx

@@ -0,0 +1,68 @@
+---
+id: get-table-metadata
+title: "Get table metadata"
+description: "Metadata associated with the table (columns, indexes, etc.)"
+sidebar_label: "Get table metadata"
+hide_title: true
+hide_table_of_contents: true
+api: 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
+sidebar_class_name: "get api-method"
+info_path: developer-docs/api/superset
+custom_edit_url: null
+hide_send_button: true
+show_extensions: true
+---
+
+import MethodEndpoint from "@theme/ApiExplorer/MethodEndpoint";
+import ParamsDetails from "@theme/ParamsDetails";
+import RequestSchema from "@theme/RequestSchema";
+import StatusCodes from "@theme/StatusCodes";
+import OperationTabs from "@theme/OperationTabs";
+import TabItem from "@theme/TabItem";
+import Heading from "@theme/Heading";
+import Translate from "@docusaurus/Translate";
+
+<Heading
+  as={"h1"}
+  className={"openapi__heading"}
+  children={"Get table metadata"}
+>
+</Heading>
+
+<MethodEndpoint
+  method={"get"}
+  path={"/api/v1/database/{pk}/table_metadata/"}
+  context={"endpoint"}
+>
+
+</MethodEndpoint>
+
+
+
+Metadata associated with the table (columns, indexes, etc.)
+
+<Heading
+  id={"request"}
+  as={"h2"}
+  className={"openapi-tabs__heading"}
+>
+  <Translate id="theme.openapi.request.title">Request</Translate>
+</Heading>
+
+<ParamsDetails
+  {...require("./get-table-metadata.ParamsDetails.json")}
+>
+
+</ParamsDetails>
+
+<RequestSchema
+  {...require("./get-table-metadata.RequestSchema.json")}
+>
+
+</RequestSchema>
+
+<StatusCodes
+  {...require("./get-table-metadata.StatusCodes.json")}
+>
+
+</StatusCodes>