Fix lot_suffix input: switch to live(onBlur) to prevent typing interference

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Filament/User/Resources/ProductResource/RelationManagers/BatchesRelationManager.php

@@ -34,7 +34,7 @@ class BatchesRelationManager extends RelationManager
                 ->maxLength(50)
                 ->required()
                 ->dehydrated(false)
-                ->live()
+                ->live(onBlur: true)
                 ->afterStateHydrated(function ($component, $record) {
                     if (! $record?->lot_number) return;
                     $pos = strrpos($record->lot_number, '-');