Adds some tests around env stop buttons.

What does this MR do?

Adds some tests to ensure that we don't regress on #33877 (closed).

Screenshots

Stopped environments should not have a stop button.

Does this MR meet the acceptance criteria?

Yes.

Conformity

• Code review guidelines
• Merge request performance guidelines
• Style guides

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers