Consistent support for JPA 3.2 transaction timeout

Closes gh-35663

spring-orm/src/test/java/org/springframework/orm/jpa/JpaTransactionManagerTests.java

@@ -581,11 +581,20 @@ class JpaTransactionManagerTests {
 		tt.setIsolationLevel(TransactionDefinition.ISOLATION_SERIALIZABLE);
 
 		assertThatExceptionOfType(InvalidIsolationLevelException.class).isThrownBy(() ->
-			tt.executeWithoutResult(status -> {}));
+				tt.executeWithoutResult(status -> {}));
 
 		verify(manager).close();
 	}
 
+	@Test
+	void testTransactionTimeout() {
+		tt.setTimeout(1000);
+		tt.executeWithoutResult(status -> {});
+
+		verify(tx).setTimeout(1000);
+		verify(manager).close();
+	}
+
 	@Test
 	void testTransactionFlush() {
 		assertThat(TransactionSynchronizationManager.hasResource(factory)).isFalse();