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-roles-by-pk.api.mdx

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