Fix hard_bounds interval handling (#62129)

The hard bounds were incorrectly scaled for intervals, which was
causing incorrect buckets to show up or no buckets at all for
interval other than 1.

Closes #62126

Author: imotov

server/src/internalClusterTest/java/org/elasticsearch/search/aggregations/bucket/HistogramIT.java

@@ -1237,7 +1237,7 @@ public void testHardBounds() throws Exception {
         assertEquals(-0.6, (double) buckets.get(0).getKey(), 0.01d);
 
         r = client().prepareSearch("test")
-            .addAggregation(histogram("histo").field("d").interval(0.1).hardBounds(new DoubleBounds(0.0, 3.0)))
+            .addAggregation(histogram("histo").field("d").interval(0.1).hardBounds(new DoubleBounds(0.0, 0.3)))
             .get();
         assertSearchResponse(r);
 

server/src/main/java/org/elasticsearch/search/aggregations/bucket/histogram/NumericHistogramAggregator.java

@@ -110,7 +110,7 @@ public void collect(int doc, long owningBucketOrd) throws IOException {
                         if (key == previousKey) {
                             continue;
                         }
-                        if (hardBounds == null || hardBounds.contain(key)) {
+                        if (hardBounds == null || hardBounds.contain(key * interval)) {
                             long bucketOrd = bucketOrds.add(owningBucketOrd, Double.doubleToLongBits(key));
                             if (bucketOrd < 0) { // already seen
                                 bucketOrd = -1 - bucketOrd;