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/delete-security-groups-by-pk.api.mdx

@@ -0,0 +1,68 @@
+---
+id: delete-security-groups-by-pk
+title: "Delete security groups by pk"
+description: "Delete security groups by pk"
+sidebar_label: "Delete security groups by pk"
+hide_title: true
+hide_table_of_contents: true
+api: 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
+sidebar_class_name: "delete 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={"Delete security groups by pk"}
+>
+</Heading>
+
+<MethodEndpoint
+  method={"delete"}
+  path={"/api/v1/security/groups/{pk}"}
+  context={"endpoint"}
+>
+
+</MethodEndpoint>
+
+
+
+Delete security groups by pk
+
+<Heading
+  id={"request"}
+  as={"h2"}
+  className={"openapi-tabs__heading"}
+>
+  <Translate id="theme.openapi.request.title">Request</Translate>
+</Heading>
+
+<ParamsDetails
+  {...require("./delete-security-groups-by-pk.ParamsDetails.json")}
+>
+
+</ParamsDetails>
+
+<RequestSchema
+  {...require("./delete-security-groups-by-pk.RequestSchema.json")}
+>
+
+</RequestSchema>
+
+<StatusCodes
+  {...require("./delete-security-groups-by-pk.StatusCodes.json")}
+>
+
+</StatusCodes>