Fix failing test

Co-authored-by: Daniel Gallups <[email protected]>

Author: wiggleforlife

crates/bevy_plugin/tests/test_strings_tables.rs

@@ -175,7 +175,7 @@ fn appends_to_pre_existing_strings_file() -> anyhow::Result<()> {
         .world()
         .resource::<AssetServer>()
         .get_load_state(&handle)
-        .is_some_and(|state| state.is_loaded())
+        .is_none_or(|state| !state.is_loaded())
     {
         app.update();
     }