website/docs: Update Docusaurus config. Prep for version picker. (#14401)

* website/docs: Clean up config. Add types.

* website/docs: Format MDX.

* website: Fix build warnings. Lint badges frontmatter.

website/docs/developer-docs/docs/style-guide.mdx

@@ -255,8 +255,8 @@ This section covers the usage of React components within our documentation. File
 Use **Tabs** to display different configurations (e.g., setting up authentication with OIDC vs. SAML) to help users navigate between options. Default to the easier or more common option. Insert the following lines wherever you want the code block to appear:
 
 ```jsx
-import Tabs from "@theme/Tabs";
 import TabItem from "@theme/TabItem";
+import Tabs from "@theme/Tabs";
 
 <Tabs
     defaultValue="oidc"

website/docs/developer-docs/setup/full-dev-environment.mdx

@@ -9,9 +9,9 @@ tags:
     - docker
 ---
 
-import Tabs from "@theme/Tabs";
-import TabItem from "@theme/TabItem";
 import ExecutionEnvironment from "@docusaurus/ExecutionEnvironment";
+import TabItem from "@theme/TabItem";
+import Tabs from "@theme/Tabs";
 
 ## Requirements