Incorrect view of warnings and errors in schema import from Excel feature.

[kirill-tolochko]

Problem description

Incorrect work of warnings and errors during schema import from Excel

Step to reproduce

Steps to reproduce the behavior:

1. Create tool, create policy
2. Try to import schema in Excel format with errors here http://localhost:4200/schemas?type=tool
   Schemas with errors.xlsx
   (or Export any working schema with formulas, and put #REF! instead of any item of the formula to reproduce the error)
3. Check errors in the dialog window
   

Expected behavior

Middle column is filled

Actual behavior

Middle column isn't filled. It's

{{ error.__path }}

in the frontend\src\app\modules\schema-engine\schema-view-dialog\schema-view-dialog.component.html

But looks like this __path isn't defined anywhere