Fix infinite loop in AeshConsole.deadlockSafeWrite() during dev mode shutdown

When connectionLock.tryLock() fails, the for(;;) loop spins indefinitely.
This occurs during shutdown when the Console Shutdown Hook holds the lock
while another thread (e.g. application shutdown firing ShutdownEvent) tries
to log through AeshConsole. Return immediately when tryLock() fails since
the lock-holding thread already drains the entire queue.

(cherry picked from commit 1b04918)

Author: gastaldi

core/deployment/src/main/java/io/quarkus/deployment/console/AeshConsole.java

@@ -197,6 +197,9 @@ private void deadlockSafeWrite() {
                     IN_WRITE.set(false);
                     connectionLock.unlock();
                 }
+            } else {
+                //another thread holds the lock; it will drain the queue
+                return;
             }
         }
     }