Fix 'not on JavaFX application thread'

Author: georgweiss

app/logbook/olog/ui/src/main/java/org/phoebus/logbook/olog/ui/write/LogEntryEditorController.java

@@ -834,7 +834,7 @@ private void getServerSideStaticData() {
                defaultLevel = optionalLevel.get().name();
             }
             selectedLevelProperty.set(logEntry.getLevel() != null ? logEntry.getLevel() : defaultLevel);
-            levelSelector.getSelectionModel().select(selectedLevelProperty.get());
+            Platform.runLater(() -> levelSelector.getSelectionModel().select(selectedLevelProperty.get()));
         });
     }