IntelliJ UI tests for Spring and corrections of regular Java tests

[alisevych]

Description

IntelliJ UI tests for Spring and corrections of regular Java tests

Fixes #2332

• tests on IntelliJ plugin UI in Spring projects
• test on Spring Unit test generation in spring-petclinic project
• test on Spring Integration test generation in spring-petclinic project
• corrections to regular Java flow tests

How to test

Automated tests

1. Comment exclude("/org/utbot/**") in utbot-intellij/build.gradle.kts
2. Run Gradle task utbot-intellij:runIdeForUiTests
3. Wait till debug IDEA is started
4. Correct DEFAULT_PROJECT_DIRECTORY in RunInfo.kt if needed (test projects will be created in this directory)
5. Run All the tests in utbot-intellij/src/test/kotlin/org/utbot/tests
   CreateProjects will be run first each time - and only then UnitTestBotActionTest - using created projects.

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.