`Notification group XXX report is already registered` pollutes `idea.log`

[tyuldashev]

Description

idea.log contains quite many stack traces which state that some notification group already registered. This makes log reading more difficult.

To Reproduce

Steps to reproduce the behavior:

1. Generate tests for some classes
2. Open idea.log. Help -> Show Log in Explorer could be used to locate it.

Expected behavior
Root cause of Notification group report is already registered errors have been fixed.

Actual behavior
Log contains many entries similar to this one:

2022-11-22 15:25:43,022 [3930998]   INFO - #c.i.n.NotificationGroup - Notification group SARIF report is already registered
java.lang.Throwable
	at com.intellij.notification.NotificationGroup.<init>(NotificationGroup.kt:64)
	at com.intellij.notification.NotificationGroup.<init>(NotificationGroup.kt:26)
	at com.intellij.notification.NotificationGroup.<init>(NotificationGroup.kt:51)
	at com.intellij.notification.NotificationGroup.<init>(NotificationGroup.kt:50)
	at org.utbot.intellij.plugin.ui.Notifier.getNotificationGroup(Notifications.kt:40)
	at org.utbot.intellij.plugin.ui.UrlNotifier.notify(Notifications.kt:108)
	at org.utbot.intellij.plugin.ui.Notifier.notify$default(Notifications.kt:31)
	at org.utbot.intellij.plugin.generator.CodeGenerationController.mergeSarifReports(CodeGenerationController.kt:571)
	at org.utbot.intellij.plugin.generator.CodeGenerationController.access$mergeSarifReports(CodeGenerationController.kt:97)
	at org.utbot.intellij.plugin.generator.CodeGenerationController$generateTests$2$1$1$1$1$1.run(CodeGenerationController.kt:174)
	at org.utbot.intellij.plugin.util.IntelliJApiHelper$run$wrapper$1.run(IntelliJApiHelper.kt:33)
	at org.utbot.intellij.plugin.util.IntelliJApiHelper$run$3.run(IntelliJApiHelper.kt:40)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:702)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:699)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:699)
	at java.base/java.lang.Thread.run(Thread.java:833)

That also could be:

#c.i.n.NotificationGroup - Notification group Generated unit tests report is already registered
#c.i.n.NotificationGroup - Notification group Test report details is already registered