feat: preserve masked value for encrypted filed on edit mode.

[hetangmodi-crest]

Issue number:

PR Type

What kind of change does this PR introduce?

• Feature
• Bug Fix
• Refactoring (no functional or API changes)
• Documentation Update
• Maintenance (dependency updates, CI, etc.)

Summary

Changes

Fixed password field placeholder behaviour in UCC account configuration forms. When editing existing accounts, encrypted fields (like passwords) now display masked values ("******") to indicate that a password is already set, instead of always showing empty fields.

User experience

Before:

• When editing an existing account, password fields were always blank
• Users couldn't distinguish between accounts with no password set vs. accounts with existing passwords
• Confusion about whether passwords needed to be re-entered during account editing

After:

• When editing an existing account with a set password, the password field shows "******" as a placeholder
• When creating a new account or editing an account without a password, the field remains empty
• Clear visual indication to users about password status without compromising security

Checklist

If an item doesn't apply to your changes, leave it unchecked.

Review

• self-review - I have performed a self-review of this change according to the development guidelines
• Changes are documented. The documentation is understandable, examples work (more info)
• PR title and description follows the contributing principles
• meeting - I have scheduled a meeting or recorded a demo to explain these changes (if there is a video, put a link below and in the ticket)

Tests

See the testing doc.

• Unit - tests have been added/modified to cover the changes
• Smoke - tests have been added/modified to cover the changes
• UI - tests have been added/modified to cover the changes
• coverage - I have checked the code coverage of my changes (see more)

Demo/meeting:

Reviewers are encouraged to request meetings or demos if any part of the change is unclear

[hetangmodi-crest]

Raised a PR in SmartX for the above CI failures.