docs: cut 6.1.0 versions for docs, admin_docs, developer_docs, components

- Snapshot all four versioned docs sections at v6.1.0; master continues to
  serve as "Next" (lastVersion: current, banner: unreleased) so editing
  master keeps updating the canonical URLs
- Enable the previously-disabled components plugin and version it
- Rename stale "developer_portal" references to "developer_docs" across
  package.json scripts, manage-versions.mjs, theme files (DocVersionBadge,
  DocVersionBanner), DOCS_CLAUDE.md, and README.md (URL backward-compat
  redirect /developer_portal/* preserved)
- Add admin_docs version scripts; drop dead "tutorials" plugin id from
  the version badge
- Generalize fixVersionedImports in manage-versions.mjs to walk every
  section's snapshot and rewrite ../../src/ and ../../data/ imports,
  catching admin_docs and components files that previous version cuts
  would have broken
- Remove orphan files: developer_portal_versions.json,
  tutorials_versions.json, and stray empty versions.json files inside
  components/ and developer_docs/ content directories

docs/developer_docs_versioned_docs/version-6.1.0/api/get-a-form-data.api.mdx

@@ -0,0 +1,68 @@
+---
+id: get-a-form-data
+title: "Get a form_data"
+description: "Get a form_data"
+sidebar_label: "Get a form_data"
+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 a form_data"}
+>
+</Heading>
+
+<MethodEndpoint
+  method={"get"}
+  path={"/api/v1/explore/form_data/{key}"}
+  context={"endpoint"}
+>
+
+</MethodEndpoint>
+
+
+
+Get a form_data
+
+<Heading
+  id={"request"}
+  as={"h2"}
+  className={"openapi-tabs__heading"}
+>
+  <Translate id="theme.openapi.request.title">Request</Translate>
+</Heading>
+
+<ParamsDetails
+  {...require("./get-a-form-data.ParamsDetails.json")}
+>
+
+</ParamsDetails>
+
+<RequestSchema
+  {...require("./get-a-form-data.RequestSchema.json")}
+>
+
+</RequestSchema>
+
+<StatusCodes
+  {...require("./get-a-form-data.StatusCodes.json")}
+>
+
+</StatusCodes>