Backport of Custom tooltip for Generated Token Policies form field on…

… auth methods into release/1.8.x (#15052)

* backport of commit f83a08b

* add changelog

* spacing

* Update generated-item.js

Co-authored-by: Angel Garbarino <argarbarino@gmail.com>
Co-authored-by: Angel Garbarino <Monkeychip@users.noreply.github.com>

changelog/15046.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+ui: Fix Generated Token's Policies helpText to clarify that comma separated values are not excepted in this field. 
+```

ui/app/components/generated-item.js

@@ -46,6 +46,16 @@ export default Component.extend({
   init() {
     this._super(...arguments);
     this.set('validationMessages', {});
+    this.model.fieldGroups.forEach((element) => {
+      // overwriting the helpText for Token Polices.
+      // HelpText from the backend says add a comma separated list, which works on the CLI but not here on the UI.
+      // This affects the TLS Certificates, Userpass, Kubernetes. These are the ones the bug had been reported about. https://github.com/hashicorp/vault/issues/10346
+      if (element.Tokens) {
+        element.Tokens.find((attr) => attr.name === 'tokenPolicies').options.helpText =
+          'Add policies that will apply to the generated token for this user. One policy per row.';
+      }
+    });
+
     if (this.mode === 'edit') {
       // For validation to work in edit mode,
       // reconstruct the model values from field group