Revert: Babel removal and runtime update (#63641)

* Revert "Update babel monorepo to v7.21.0 (#63532)"

This reverts commit 3d974fc716.

* Revert "Chore: Remove babel deps and config (#62461)"

This reverts commit 21a988a659.

.github/CODEOWNERS

@@ -327,6 +327,7 @@ tsconfig.json @grafana/frontend-ops
 /.yarnrc.yml @grafana/frontend-ops
 /yarn.lock @grafana/frontend-ops
 /.linguirc @grafana/user-essentials
+/babel.config.json @grafana/frontend-ops
 lerna.json @grafana/frontend-ops
 /.prettierrc.js @grafana/frontend-ops
 /.eslintrc @grafana/frontend-ops

.github/pr-commands.json

@@ -23,6 +23,7 @@
         "package.json",
         "tsconfig.json",
         "lerna.json",
+        ".babelrc",
         ".prettierrc.js",
         ".eslintrc",
         "**/*.mdx"