allow to install VPP apps without scripts

[roperzh]

for #22352

Checklist for submitter

If some of the following don't apply, delete the relevant line.

• Added/updated tests
• Manual QA for all new/changed functionality

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.20%. Comparing base (839106c) to head (dabf377).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #22365   +/-   ##
=======================================
  Coverage   65.20%   65.20%           
=======================================
  Files        1496     1496           
  Lines      117145   117145           
  Branches     3566     3566           
=======================================
  Hits        76390    76390           
  Misses      33636    33636           
  Partials     7119     7119           

Flag	Coverage Δ
frontend	52.35% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.