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/get-the-user-object.api.mdx

@@ -0,0 +1,58 @@
+---
+id: get-the-user-object
+title: "Get the user object"
+description: "Gets the user object corresponding to the agent making the request, or returns a 401 error if the user is unauthenticated."
+sidebar_label: "Get the user object"
+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 the user object"}
+>
+</Heading>
+
+<MethodEndpoint
+  method={"get"}
+  path={"/api/v1/me/"}
+  context={"endpoint"}
+>
+
+</MethodEndpoint>
+
+
+
+Gets the user object corresponding to the agent making the request, or returns a 401 error if the user is unauthenticated.
+
+<ParamsDetails>
+
+</ParamsDetails>
+
+<RequestSchema
+  {...require("./get-the-user-object.RequestSchema.json")}
+>
+
+</RequestSchema>
+
+<StatusCodes
+  {...require("./get-the-user-object.StatusCodes.json")}
+>
+
+</StatusCodes>