fix: EKS credentials form doesn't "reset" after error
This MR fixes the issue described in #37449 (closed). The issue contains screenshots and a detailed description of the problem.
What does this MR do?
In the loading button component, the "disabled" class is set automatically by bootstrap when the disabled attribute set added to the button element. When the disabled attribute is removed, the disabled
class is not removed afterward. This MR fixes that problem.