Fix language conversion methods after refactoring

src/Cms/Language.php

@@ -174,18 +174,18 @@ public static function create(array $props): static
 
 		$language->save();
 
+		// update the main languages collection in the app instance
+		$kirby->languages(false)->append($language->code(), $language);
+
 		if ($languages->count() === 0) {
 			foreach ($kirby->models() as $model) {
-				$model->storage()->convertLanguage(
-					'default',
-					$language->code()
+				$model->storage()->moveLanguage(
+					$kirby->defaultLanguage(),
+					$language
 				);
 			}
 		}
 
-		// update the main languages collection in the app instance
-		$kirby->languages(false)->append($language->code(), $language);
-
 		// trigger after hook
 		$kirby->trigger(
 			'language.create:after',
@@ -223,17 +223,17 @@ public function delete(): bool
 			throw new Exception('The language could not be deleted');
 		}
 
+		// get the original language collection and remove the current language
+		$kirby->languages(false)->remove($code);
+
 		foreach ($kirby->models() as $model) {
 			if ($this->isLast() === true) {
-				$model->storage()->convertLanguage($code, 'default');
+				$model->storage()->moveLanguage($this, $kirby->defaultLanguage());
 			} else {
-				$model->storage()->deleteLanguage($code);
+				$model->storage()->deleteLanguage($this);
 			}
 		}
 
-		// get the original language collection and remove the current language
-		$kirby->languages(false)->remove($code);
-
 		// trigger after hook
 		$kirby->trigger('language.delete:after', [
 			'language' => $this