Jakarta EE 9 migration

Upgrades many dependency declarations; removes old EJB 2.x support and outdated Servlet-based integrations (Commons FileUpload, FreeMarker JSP support, Tiles).

Closes gh-22093
Closes gh-25354
Closes gh-26185
Closes gh-27423
See gh-27424

spring-aspects/src/test/java/org/springframework/transaction/aspectj/JtaTransactionAspectsTests.java

@@ -18,8 +18,7 @@ package org.springframework.transaction.aspectj;
 
 import java.io.IOException;
 
-import javax.transaction.Transactional;
-
+import jakarta.transaction.Transactional;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;