Handle throwables in project info retrieval.

Errors like java.lang.StackOverflowError can be encountered
Rethrow as a regular exception containing the relevant message, or just the fully qualified name of the exception
Fixes https://github.com/eclipse/lsp4mp/issues/418

So instead of seeing :

!ENTRY org.eclipse.jdt.ls.core 4 2 2023-08-22 15:09:46.706
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jdt.ls.core".
!STACK 0
java.lang.ClassCastException: class java.lang.StackOverflowError cannot be cast to class java.lang.Exception (java.lang.StackOverflowError and java.lang.Exception are in module java.base of loader 'bootstrap')
    at org.eclipse.lsp4mp.jdt.internal.core.ls.MicroProfileDelegateCommandHandler.getMicroProfileProjectInfo(MicroProfileDelegateCommandHandler.java:120)
    at org.eclipse.lsp4mp.jdt.internal.core.ls.MicroProfileDelegateCommandHandler.executeCommand(MicroProfileDelegateCommandHandler.java:58)
    at org.eclipse.jdt.ls.core.internal.handlers.WorkspaceExecuteCommandHandler$1.run(WorkspaceExecuteCommandHandler.java:230)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.jdt.ls.core.internal.handlers.WorkspaceExecuteCommandHandler.executeCommand(WorkspaceExecuteCommandHandler.java:220)
    at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$4(JDTLanguageServer.java:599)
    at org.eclipse.jdt.ls.core.internal.BaseJDTLanguageServer.lambda$0(BaseJDTLanguageServer.java:87)
    at java.base/java.util.concurrent.CompletableFuture$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)

which "technically" does expose the issue but only by telling you it failed to appropriately cast, you'll see :

!ENTRY org.eclipse.jdt.ls.core 4 0 2023-08-22 15:01:35.773
!MESSAGE Error in calling delegate command handler
!STACK 0
java.lang.Exception: java.lang.StackOverflowError
    at org.eclipse.lsp4mp.jdt.internal.core.ls.MicroProfileDelegateCommandHandler.getMicroProfileProjectInfo(MicroProfileDelegateCommandHandler.java:127)
    at org.eclipse.lsp4mp.jdt.internal.core.ls.MicroProfileDelegateCommandHandler.executeCommand(MicroProfileDelegateCommandHandler.java:58)
    at org.eclipse.jdt.ls.core.internal.handlers.WorkspaceExecuteCommandHandler$1.run(WorkspaceExecuteCommandHandler.java:230)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.jdt.ls.core.internal.handlers.WorkspaceExecuteCommandHandler.executeCommand(WorkspaceExecuteCommandHandler.java:220)
    at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$4(JDTLanguageServer.java:599)
    at org.eclipse.jdt.ls.core.internal.BaseJDTLanguageServer.lambda$0(BaseJDTLanguageServer.java:87)
    at java.base/java.util.concurrent.CompletableFuture$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)

(Note that the StackOverflowError didn't contain an actual message, though maybe there's errors that would contain that)

eclipse / lsp4mp

Handle throwables in project info retrieval. #419