show the alarm reliability warning at saving the first event too

app/src/main/kotlin/com/simplemobiletools/calendar/pro/activities/EventActivity.kt

@@ -994,7 +994,18 @@ class EventActivity : SimpleActivity() {
 
     private fun saveCurrentEvent() {
         ensureBackgroundThread {
+            trySaveEvent()
+        }
+    }
+
+    private fun trySaveEvent() {
+        if (config.wasAlarmWarningShown || (mReminder1Minutes == REMINDER_OFF && mReminder2Minutes == REMINDER_OFF && mReminder3Minutes == REMINDER_OFF)) {
             saveEvent()
+        } else {
+            ConfirmationDialog(this, messageId = R.string.reminder_warning, positive = R.string.ok, negative = 0) {
+                config.wasAlarmWarningShown = true
+                saveEvent()
+            }
         }
     }