Order modifiers to align with JLS

This commit also applies Checkstyle ModifierOrder to enforce it.

See gh-31368

spring-core-test/src/test/java/org/springframework/core/test/tools/ClassFileTests.java

@@ -30,7 +30,7 @@ import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException
  */
 class ClassFileTests {
 
-	private final static byte[] TEST_CONTENT = new byte[]{'a'};
+	private static final byte[] TEST_CONTENT = new byte[]{'a'};
 
 	@Test
 	void ofNameAndByteArrayCreatesClass() {