fix(vue-app): not strip trailing slash for redirect external domain

[clarkdo]

Types of changes

• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

Add test for #7475

When redirect to external domain, not strip trailing slash.

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly. (PR: #)
• I have added tests to cover my changes (if not applicable, please state why)
• All new and existing tests are passing.

[codecov-commenter]

Codecov Report

Merging #7533 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev    #7533   +/-   ##
=======================================
  Coverage   70.21%   70.21%           
=======================================
  Files          88       88           
  Lines        3740     3740           
  Branches     1017     1017           
=======================================
  Hits         2626     2626           
  Misses        905      905           
  Partials      209      209           

Flag	Coverage Δ
#unittests	70.21% <ø> (ø)

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