Rename Action query param to _action (#12510)

* rename _astroAction to _action

* changeset

1 files changed, 4 insertions, 2 deletions

diff --git a/packages/integrations/react/src/actions.ts b/packages/integrations/react/src/actions.ts
index a5ccb2f9a..06ecd4148 100644
--- a/packages/integrations/react/src/actions.ts
+++ b/packages/integrations/react/src/actions.ts
@@ -26,7 +26,7 @@ export function experimental_withState<T>(action: FormFn<T>) {
 	// Called by React when form state is passed from the server.
 	// If the action names match, React returns this state from `useActionState()`.
 	callback.$$IS_SIGNATURE_EQUAL = (incomingActionName: string) => {
-		const actionName = new URLSearchParams(action.toString()).get('_astroAction');
+		const actionName = new URLSearchParams(action.toString()).get('_action');
 		return actionName === incomingActionName;
 	};
 
@@ -46,7 +46,9 @@ export function experimental_withState<T>(action: FormFn<T>) {
  */
 export async function experimental_getActionState<T>({
 	request,
-}: { request: Request }): Promise<T> {
+}: {
+	request: Request;
+}): Promise<T> {
 	const contentType = request.headers.get('Content-Type');
 	if (!contentType || !isFormRequest(contentType)) {
 		throw new AstroError(