Remove ambiguity for `default` and `test-namespace`. It comes from `namespaceOverride` after #122. This commit helps to complete `namespaceOverride`.
- create `test-namespace` namespace
- install app on `test-namespace` namespace instead of `default`
- (Optional) wait until `pod/open-webui-0` is ready
Updating a setting that will package/ upload the release on every run, which should hopefully cause the package to re-upload to the `gh-pages` branch correctly.