[JAVA]: Fix unknown property error for gradle build (#19933)

* Replace classifier with archiveClassifier

* Regenerate samples by script

samples/client/echo_api/java/native/build.gradle

@@ -50,12 +50,12 @@ task execute(type:JavaExec) {
 }
 
 task sourcesJar(type: Jar, dependsOn: classes) {
-    classifier = 'sources'
+    archiveClassifier = 'sources'
     from sourceSets.main.allSource
 }
 
 task javadocJar(type: Jar, dependsOn: javadoc) {
-    classifier = 'javadoc'
+    archiveClassifier = 'javadoc'
     from javadoc.destinationDir
 }