Fix context menu for all other non-control widgets

Previous change is only applicable to control widgets with the
confirm dialog. Other widgets do not have these properties and
so first we should check if they are present.

Author: rjwills28

app/display/runtime/src/main/java/org/csstudio/display/builder/runtime/app/ContextMenuSupport.java

@@ -138,12 +138,14 @@ private void fillMenu(Runnable setFocus, final Widget widget) {
         final Optional<WidgetProperty<Boolean>> prompt = widget.checkProperty(propConfirmDialog);
         final Optional<WidgetProperty<ConfirmDialog>> promptOptions = widget.checkProperty(propConfirmDialogOptions);
         Boolean promptBool = false;
-        if (promptOptions.get().getValue() instanceof ConfirmDialog) {
-            if (((ConfirmDialog) promptOptions.get().getValue()) != ConfirmDialog.NONE) {
-                promptBool = true;
+        if (prompt.isPresent() && promptOptions.isPresent()) {
+            if (promptOptions.get().getValue() instanceof ConfirmDialog) {
+                if (((ConfirmDialog) promptOptions.get().getValue()) != ConfirmDialog.NONE) {
+                    promptBool = true;
+                }
+            } else {
+                promptBool = prompt.get().getValue();
             }
-        } else {
-            promptBool = prompt.get().getValue();
         }
         final boolean need_dialog = (pass.isPresent()  &&  !pass.get().getValue().isBlank())  ||
                                   (prompt.isPresent()  &&  promptBool );