[BUG] The "X" (close) icon is missing from the monitor details flyout

[xeniatup]

What is the bug?
The "X" (close) icon is missing from the monitor details flyout's top right corner, which creates inconsistency in the flyout behavior and disrupts the flow for user.

How can one reproduce the bug?
Steps to reproduce the behavior:

1. Go to Alerting
2. Land on Alerts by trigger table (assuming that the table is populated)
3. Click on any entry in the table
4. See the flyout with monitor details open
5. See the missing "X" button in the flyout header

What is the expected behavior?
The "X" icon should be present in the flyout header to allow user to close the flyout using the regular pattern.

What is your host/environment?

• OS: macOS
• Version 12.4
• Plugins Alerting
• Browser Chrome, Firefox, Safari

Do you have any screenshots?

[AWSHurneyt]

Added these buttons to the Alerts and Findings flyouts locally, and will be publishing a PR once the tests finish.

[amsiglan]

@AWSHurneyt Let's create the PR for this

[amsiglan]

Completed