Stop role from auto-changing if user manually selected a role during account creation

[gp-santos]

Description

This PR changes the behavior of the Add Account form to not fill the default role if the user has manually selected a role before changing the domain.

Fixes: #13191

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• Build/CI
• Test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

[Pearl1594]

@blueorangutan ui

[blueorangutan]

@Pearl1594 a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 18.11%. Comparing base (7308dad) to head (21d720f).

Additional details and impacted files

@@ Coverage Diff @@## main #13320 +/- ##
=========================================
Coverage 18.10% 18.11% - Complexity 16752 16753 +1 
=========================================
Files 6037 6037 Lines 542796 542798 +2 Branches 66456 66457 +1 =========================================
+ Hits 98291 98301 +10 + Misses 433460 433449 -11 - Partials 11045 11048 +3 

Flag	Coverage Δ
uitests	3.51% <ø> (-0.01%)	⬇️
unittests	19.27% <ø> (+<0.01%)	⬆️

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[blueorangutan]

UI build: ✔️
Live QA URL: https://qa.cloudstack.cloud/simulator/pr/13320 (QA-JID-945)

[Pearl1594]

Code LGTM. Verified behaviour.

[winterhazel]

Looks good. Also verified in QA.