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/bulk-delete-saved-queries.api.mdx

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