Update Footer Button Order to Match PatternFly Guidelines in DR Policy Assignment UI

[TimothyAsirJeyasing]

This need to be handled in two places

1. Manage disaster recovery
2. Assign DR for ACM discovered application

The footer buttons in the "Enroll managed application" UI for assigning a Disaster Recovery (DR) policy to an application are not aligned with the PatternFly guidelines. Currently, the buttons are arranged as "Next," "Back," and "Cancel." According to PatternFly, the recommended button order should be "Back," "Next," and "Cancel."

Steps to Reproduce:
Open the "Enroll managed application" UI for assigning a DR policy.
Observe the button order in the footer of the screen.
Expected Result: The buttons should appear in the order:
Back, Next, Cancel

Actual Result: The buttons currently appear in the order:
Next, Back, Cancel
Proposed Solution: Update the button order in the footer to match the PatternFly standard:
Place "Back" as the first button.
Place "Next" as the second button.
Place "Cancel" as the third button.

[TimothyAsirJeyasing]