feat: [DX-2168] Improve password StatusBar transition animation

[witwash]

Summary

• improved transition from color to transparency

Testing steps

Dev-tested

Follow-up issues

None

Check during review

• Verify against Jira issue.
• Is the PR over 300 additions? Consider rejecting it with advice to split it. Is it over 500 additions? It should definitely be rejected.
• Unused code removed.
• Build passing.
• Is it a bug fix? Check that it is covered by a proper test (unit or integration).

[witwash]

@chaeMil, can you look at this one? When you go to Color.transparent the animation is not fluid because the transparent color is derived from black. This change will make the transition smooth, because it would use the previous state color and add alpha, instead of the whole color -> transparent transition.