Cannot run test class with '$' in its name sometime.

Looks like the upstream test runner could not deal with this case decently.

I can see traces:

org.eclipse.core.runtime.CoreException: No tests found with test runner 'JUnit 4'.
	at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate.abort(JUnitLaunchConfigurationDelegate.java:763)
	at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate.evaluateTests(JUnitLaunchConfigurationDelegate.java:372)
	at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate.getVMRunnerConfiguration(JUnitLaunchConfigurationDelegate.java:162)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at com.microsoft.java.test.plugin.launchers.JUnitLaunchConfigurationDelegate.getJUnitLaunchArguments(JUnitLaunchConfigurationDelegate.java:75)
	at com.microsoft.java.test.plugin.launchers.JUnitLaunchUtils.resolveLaunchArgument(JUnitLaunchUtils.java:102)
	at com.microsoft.java.test.plugin.handler.TestDelegateCommandHandler.executeCommand(TestDelegateCommandHandler.java:50)
	at org.eclipse.jdt.ls.core.internal.handlers.WorkspaceExecuteCommandHandler$1.run(WorkspaceExecuteCommandHandler.java:215)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.jdt.ls.core.internal.handlers.WorkspaceExecuteCommandHandler.executeCommand(WorkspaceExecuteCommandHandler.java:205)
	at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$4(JDTLanguageServer.java:507)
	at org.eclipse.jdt.ls.core.internal.BaseJDTLanguageServer.lambda$0(BaseJDTLanguageServer.java:75)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)

Empieza siguiendo la ruta de lanzamiento de JUnit indicada en el stack trace, especialmente JUnitLaunchConfigurationDelegate, JUnitLaunchUtils y TestDelegateCommandHandler. Reproduce el fallo con una clase de prueba cuyo nombre contenga '$' y compárala con una clase que use un nombre normal. Se considera terminado cuando la clase de prueba afectada se pueda ejecutar mediante el VS Code Java test runner sin el error indicado 'No tests found'.