[FIX] application.py: Fix qt plugins search logic error

[ales-erjavec]

Issue

Wrong logic in fix_qt_plugins_path

Was broken for PyQt5 due to early return

Changes

Fix qt plugins search logic error

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 76.61%. Comparing base (35d517f) to head (1b341a6).

Files with missing lines	Patch %	Lines
orangecanvas/application/application.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #311   +/-   ##
=======================================
  Coverage   76.61%   76.61%           
=======================================
  Files         100      100           
  Lines       21214    21214           
=======================================
  Hits        16253    16253           
  Misses       4961     4961           

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