Incorrect empty error message representation

[Hello-zoka]

Describe the bug
If we use incompatible jacoco and Java versions, empty tests produce an error, which is represented with an empty window.

To Reproduce

• Clone repo from the development branch, run "Run IDE for UI Tests"
• Create a standard IntelliJ IDEA project with open SDK 21(This causes error due to incompatibility with jacoco)
• Add JUnit 5.8.1 in .iml configuration using maven
• Generate tests on main class through TestSpark
• Empty one of the tests, run it ---> incorrect tests + error message is not displaying

Expected behavior
Empty tests have to display an error message to be successful.

Screenshots

• Screenshot for empty test

Additional context
The problem occurred due to the incompatibility of the Jacoco version and java21, which led to the strange behavior of error message representation.

[Hello-zoka]

Solved by #362 and #340