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/create-a-new-dashboard.api.mdx

@@ -0,0 +1,66 @@
+---
+id: create-a-new-dashboard
+title: "Create a new dashboard"
+description: "Create a new dashboard"
+sidebar_label: "Create a new dashboard"
+hide_title: true
+hide_table_of_contents: true
+api: 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
+sidebar_class_name: "post 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={"Create a new dashboard"}
+>
+</Heading>
+
+<MethodEndpoint
+  method={"post"}
+  path={"/api/v1/dashboard/"}
+  context={"endpoint"}
+>
+
+</MethodEndpoint>
+
+
+
+Create a new dashboard
+
+<Heading
+  id={"request"}
+  as={"h2"}
+  className={"openapi-tabs__heading"}
+>
+  <Translate id="theme.openapi.request.title">Request</Translate>
+</Heading>
+
+<ParamsDetails>
+
+</ParamsDetails>
+
+<RequestSchema
+  {...require("./create-a-new-dashboard.RequestSchema.json")}
+>
+
+</RequestSchema>
+
+<StatusCodes
+  {...require("./create-a-new-dashboard.StatusCodes.json")}
+>
+
+</StatusCodes>