Add constraints to the start line field in SARIF

[mmvpm]

Description

Made sure that startLine field in the SarifRegion is greater than zero after calling the SarifRegion.withStartLine method.

Fixes #1759

How to test

Automated tests

Regression: org.utbot.sarif.SarifReportTest

Manual tests

Please, repeat the scenario from the issue #1759

Self-check list

• I've set the proper labels for my PR (at least, for category and component).
• PR title and description are clear and intelligible.
• I've added enough comments to my code, particularly in hard-to-understand areas.
• The functionality I've repaired, changed or added is covered with automated tests.
• Manual tests have been provided optionally.
• The documentation for the functionality I've been working on is up-to-date.

[mmvpm]

Log file in the %TEMP%/UTBot/rdEngineProcessLogs

[alisevych]

The issue #1759 is :

• reproducing with plugin built from main
• NOT reproducing with plugin built from this branch.
  The fix is thus verified.