Handle non-physical PsiFile in utbot inspections

[mmvpm]

Description

In the utbot inspection may be received a non-physical file for which IDEA can't create problem descriptor. In this case we need to get somehow the corresponding physical file.

Now all is ok:

Fixes #1589

Type of Change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Automated Testing

There are no unit tests for UI for now

Manual Scenario

Please, repeat the scenario from the issue #1589

Checklist:

• The change followed the style guidelines of the UTBot project
• Self-review of the code is passed
• The change contains enough commentaries, particularly in hard-to-understand areas
• New documentation is provided or existed one is altered
• No new warnings
• All tests pass locally with my changes