DEV: Update ember-cli-htmlbars to 6.2.0 (#20467)

* Build(deps): Bump ember-cli-htmlbars in /app/assets/javascripts

Bumps [ember-cli-htmlbars](https://github.com/ember-cli/ember-cli-htmlbars) from 6.1.1 to 6.2.0.
- [Release notes](https://github.com/ember-cli/ember-cli-htmlbars/releases)
- [Changelog](https://github.com/ember-cli/ember-cli-htmlbars/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ember-cli/ember-cli-htmlbars/compare/v6.1.1...v6.2.0)

---
updated-dependencies:
- dependency-name: ember-cli-htmlbars
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Load additional files

* Update code

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

spec/lib/discourse_js_processor_spec.rb

@@ -121,7 +121,7 @@ RSpec.describe DiscourseJsProcessor do
         {
           "id": null,
           "block": "[[[1,[34,0]]],[],false,[\\"somevalue\\"]]",
-          "moduleName": "(unknown template module)",
+          "moduleName": "/blah/mymodule",
           "isStrictMode": false
         });
       });