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

Snapshots all four versioned Docusaurus sections at v6.1.0, cut from
master after the version-cutting tooling (#39837), broken-internal-
links fix (#40102), and user_docs rename (#40171) all landed. With
the rename in place, all four sections now produce parallel-named
files at the docs/ root (no more bare `versioned_docs/` outlier).

Versioning behavior: lastVersion stays at current for every section,
so the canonical URLs (/user-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.

Snapshot includes:
- All MDX content for the four sections.
- Auto-gen captured fresh: 74 database pages (engine spec metadata),
  ~1,800 API reference files (openapi.json), 59 component pages
  (Storybook stories).
- Data imports frozen at cut time into snapshot-local _versioned_data/
  dirs:
    user_docs_versioned_docs/version-6.1.0/_versioned_data/src/data/databases.json
      (canonical 80-database diagnostics from master, preserved by the
      generator's input-hash cache)
    admin_docs_versioned_docs/version-6.1.0/_versioned_data/data/countries.json
    admin_docs_versioned_docs/version-6.1.0/_versioned_data/static/feature-flags.json
    developer_docs_versioned_docs/version-6.1.0/_versioned_data/static/data/components.json
- Import paths in deeply-nested files rewritten so they still resolve
  from one directory deeper inside the snapshot.
- developer_docs/extensions/overview.md snapshot has the FIXED
  ./mcp.md form (from #40102), so the SPA-nav 404 isn't baked into
  the 6.1.0 version.

Verified via full yarn build: exit 0, no broken links surfaced by
onBrokenLinks: throw.

docs/developer_docs_versioned_docs/version-6.1.0/api/export-dashboard-as-example-bundle.api.mdx

@@ -0,0 +1,68 @@
+---
+id: export-dashboard-as-example-bundle
+title: "Export dashboard as example bundle"
+description: "Exports a dashboard with its charts and datasets in the example format used by the Superset example loading system. The export includes Parquet data files and YAML configuration files."
+sidebar_label: "Export dashboard as example bundle"
+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={"Export dashboard as example bundle"}
+>
+</Heading>
+
+<MethodEndpoint
+  method={"get"}
+  path={"/api/v1/dashboard/{pk}/export_as_example/"}
+  context={"endpoint"}
+>
+
+</MethodEndpoint>
+
+
+
+Exports a dashboard with its charts and datasets in the example format used by the Superset example loading system. The export includes Parquet data files and YAML configuration files.
+
+<Heading
+  id={"request"}
+  as={"h2"}
+  className={"openapi-tabs__heading"}
+>
+  <Translate id="theme.openapi.request.title">Request</Translate>
+</Heading>
+
+<ParamsDetails
+  {...require("./export-dashboard-as-example-bundle.ParamsDetails.json")}
+>
+
+</ParamsDetails>
+
+<RequestSchema
+  {...require("./export-dashboard-as-example-bundle.RequestSchema.json")}
+>
+
+</RequestSchema>
+
+<StatusCodes
+  {...require("./export-dashboard-as-example-bundle.StatusCodes.json")}
+>
+
+</StatusCodes>