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-report-schedules.api.mdx

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