fix: ignore error display unless enabled via nativescript.config

Author: NathanWalker

NativeScript/runtime/NativeScriptException.mm

@@ -427,11 +427,15 @@
 
 void NativeScriptException::ShowErrorModal(const std::string& title, const std::string& message,
                                            const std::string& stackTrace) {
-  // Only show modal in debug mode
   if (!RuntimeConfig.IsDebug) {
     return;
   }
 
+    // only show when enabled via nativescript.config
+  if (Runtime::showErrorDisplay() == false) {
+    return;
+  }
+
   // For boot-level crashes, try a simpler approach first
   UIApplication* app = [UIApplication sharedApplication];