build: inline external Github Actions to unblock CI (#12241)

* build: inline cached-dependencies to unblock CI

* Run E2E on pull_request on;y

* Inline all external actions

* Checkout needed for internal actions

Also fixes pre-commit

* Add missing files

.github/actions/file-changes-action/tsconfig.build.json

@@ -0,0 +1,6 @@
+{
+  "extends": "./tsconfig.json",
+  "exclude": [
+    "src/tests/**/*"
+  ]
+}