Fix admin modals getting stuck after a successful submit

src/routes/(protected)/admin/users/page.svelte.spec.ts

@@ -61,4 +61,25 @@ describe('users admin page', () => {
 		await expect.element(page.getByRole('button', { name: 'Save User' })).toBeInTheDocument();
 		expect(page.getByText('User updated').elements()).toHaveLength(0);
 	});
+
+	it('closes the create modal after a successful submit', async () => {
+		const result = render(Page, {
+			params: {},
+			data: makeData(),
+			form: null
+		});
+
+		await clickButton('New User');
+		await expect.element(page.getByRole('button', { name: 'Create User' })).toBeInTheDocument();
+
+		await result.rerender({ form: { success: true, action: 'upsert' } });
+
+		await expect.element(page.getByText('User created')).toBeInTheDocument();
+		await vi.waitFor(
+			() => {
+				expect(page.getByRole('button', { name: 'Create User' }).elements()).toHaveLength(0);
+			},
+			{ timeout: 3000 }
+		);
+	});
 });