Enable bwc tests after backport of bounds in aggregations refactoring (#60688)

This commit enables all bwc tests after #60681 is merged.

Author: imotov

build.gradle

@@ -174,8 +174,8 @@ tasks.register("verifyVersions") {
  * after the backport of the backcompat code is complete.
  */
 
-boolean bwc_tests_enabled = false
-final String bwc_tests_disabled_issue = "https://github.com/elastic/elasticsearch/pull/60681" /* place a PR link here when committing bwc changes */
+boolean bwc_tests_enabled = true
+final String bwc_tests_disabled_issue = "" /* place a PR link here when committing bwc changes */
 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/search/aggregations/bucket/histogram/HistogramAggregationBuilder.java

@@ -130,8 +130,9 @@ public HistogramAggregationBuilder(StreamInput in) throws IOException {
         minDocCount = in.readVLong();
         interval = in.readDouble();
         offset = in.readDouble();
-        if (in.getVersion().onOrAfter(Version.V_8_0_0)) {
+        if (in.getVersion().onOrAfter(Version.V_7_10_0)) {
             extendedBounds = in.readOptionalWriteable(DoubleBounds::new);
+            hardBounds = in.readOptionalWriteable(DoubleBounds::new);
         } else {
             double minBound = in.readDouble();
             double maxBound = in.readDouble();
@@ -141,9 +142,6 @@ public HistogramAggregationBuilder(StreamInput in) throws IOException {
                 extendedBounds = new DoubleBounds(minBound, maxBound);
             }
         }
-        if (in.getVersion().onOrAfter(Version.V_7_10_0)) {
-            hardBounds = in.readOptionalWriteable(DoubleBounds::new);
-        }
     }
 
     @Override
@@ -153,8 +151,9 @@ protected void innerWriteTo(StreamOutput out) throws IOException {
         out.writeVLong(minDocCount);
         out.writeDouble(interval);
         out.writeDouble(offset);
-        if (out.getVersion().onOrAfter(Version.V_8_0_0)) {
+        if (out.getVersion().onOrAfter(Version.V_7_10_0)) {
             out.writeOptionalWriteable(extendedBounds);
+            out.writeOptionalWriteable(hardBounds);
         } else {
             if (extendedBounds != null) {
                 out.writeDouble(extendedBounds.getMin());
@@ -164,9 +163,6 @@ protected void innerWriteTo(StreamOutput out) throws IOException {
                 out.writeDouble(Double.NEGATIVE_INFINITY);
             }
         }
-        if (out.getVersion().onOrAfter(Version.V_7_10_0)) {
-            out.writeOptionalWriteable(hardBounds);
-        }
     }
 
     /** Get the current interval that is set on this builder. */