fix(vue-app): pass vm also as arg to support arrow fns

[pimlie]

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

Fixes: #6466

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-io]

Codecov Report

Merging #6473 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev    #6473   +/-   ##
=======================================
  Coverage   95.65%   95.65%           
=======================================
  Files          79       79           
  Lines        2692     2692           
  Branches      696      696           
=======================================
  Hits         2575     2575           
  Misses        101      101           
  Partials       16       16

Flag	Coverage Δ
#e2e	100% <ø> (ø)	⬆️
#fixtures	50.7% <ø> (ø)	⬆️
#unit	92.34% <ø> (ø)	⬆️

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