Enable BWC test after backporting upgrade to lucene-9.4.1 (#91093)

Adjust the version of lucene for Elasticsearch 8.5.0

relates https://github.com/elastic/elasticsearch/pull/91090

build.gradle

@@ -137,9 +137,9 @@ tasks.register("verifyVersions") {
  * after the backport of the backcompat code is complete.
  */
 
-boolean bwc_tests_enabled = false
+boolean bwc_tests_enabled = true
 // place a PR link here when committing bwc changes:
-String bwc_tests_disabled_issue = "https://github.com/elastic/elasticsearch/pull/91090"
+String bwc_tests_disabled_issue = ""
 if (bwc_tests_enabled == false) {
   if (bwc_tests_disabled_issue.isEmpty()) {
     throw new GradleException("bwc_tests_disabled_issue must be set when bwc_tests_enabled == false")

server/src/main/java/org/elasticsearch/Version.java

@@ -123,7 +123,7 @@ public class Version implements Comparable<Version>, ToXContentFragment {
     public static final Version V_8_4_2 = new Version(8_04_02_99, org.apache.lucene.util.Version.LUCENE_9_3_0);
     public static final Version V_8_4_3 = new Version(8_04_03_99, org.apache.lucene.util.Version.LUCENE_9_3_0);
     public static final Version V_8_4_4 = new Version(8_04_04_99, org.apache.lucene.util.Version.LUCENE_9_3_0);
-    public static final Version V_8_5_0 = new Version(8_05_00_99, org.apache.lucene.util.Version.LUCENE_9_4_0);
+    public static final Version V_8_5_0 = new Version(8_05_00_99, org.apache.lucene.util.Version.LUCENE_9_4_1);
     public static final Version V_8_6_0 = new Version(8_06_00_99, org.apache.lucene.util.Version.LUCENE_9_4_1);
     public static final Version CURRENT = V_8_6_0;