chore(account): key mgmt view ui fixes

[jeroenptrs]

Description

• Keychain seed didn't have fluid width.
• It kept saying "Show & Unlock" even after unlocking

Motivation and Context

UI fixes

How Has This Been Tested?

It works! 😄

Screenshots (if appropriate)

Types of changes

• Chore (tests, refactors, and fixes)
• New feature (adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• I have read the CONTRIBUTING guidelines and confirm that my code follows the code style of this project.
• Tests for the changes have been added (for bug fixes/features)

Documentation

• Docs need to be added/updated (for bug fixes/features)

Closing issues

Fixes #

[codecov]

Codecov Report

Merging #1052 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #1052   +/-   ##
========================================
  Coverage    51.48%   51.48%           
========================================
  Files          237      237           
  Lines         2016     2016           
  Branches       267      267           
========================================
  Hits          1038     1038           
  Misses         813      813           
  Partials       165      165

[codecov]

Codecov Report

Merging #1052 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #1052   +/-   ##
========================================
  Coverage    51.48%   51.48%           
========================================
  Files          237      237           
  Lines         2016     2016           
  Branches       267      267           
========================================
  Hits          1038     1038           
  Misses         813      813           
  Partials       165      165