[build] Fix "mvn test" from root directory for java and kotlin.

[kaby76]

• "mvn test" was not working in the root directory for java/ and kotlin/kotlin.
• I don't know why, but running "mvn test" from the java/ directory worked fine. That is how I originally tested it when I made the change to add java20.
• kotlin/kotlin actually has two scenarios in the pom.xml that were not programmed into desc.xml. This is now fixed. The problem was that kotlin/kotlin/examples/script/*.kt required a different entry point to the grammar. I'm not sure why I remastered the tests instead of just fixing the problem by adding the two test scenarios.
• sql/clickhouse still fails but a fix is in the works. [build] Fix ClickHouse pom typo #4283
• The output from mvn test > out.txt 2>&1 is here: out.txt

[teverett]

@kaby76 thanks!