Update version checks for shard search idle metric after backport to 2.x (opensearch-project#12972)

Author: ruai0511

rest-api-spec/src/main/resources/rest-api-spec/test/cat.shards/10_basic.yml

@@ -1,13 +1,13 @@
 "Help":
   - skip:
-      version: " - 2.99.99"
+      version: " - 2.13.99"
       reason:  search idle reactivate count total is only added in 3.0.0
       features: node_selector
   - do:
       cat.shards:
         help: true
       node_selector:
-        version: "3.0.0 - "
+        version: "2.14.0 - "
 
   - match:
       $body: |
@@ -93,16 +93,16 @@
              docs.deleted                     .+   \n
         $/
 ---
-"Help from 2.12.0 to 2.99.99":
+"Help from 2.12.0 to 2.13.99":
   - skip:
-      version: " - 2.11.99 , 3.0.0 - "
+      version: " - 2.11.99 , 2.14.0 - "
       reason:  deleted docs and concurrent search are added in 2.12.0
       features: node_selector
   - do:
       cat.shards:
         help: true
       node_selector:
-        version: "2.12.0 - 2.99.99"
+        version: "2.12.0 - 2.13.99"
 
   - match:
       $body: |

server/src/main/java/org/opensearch/index/search/stats/SearchStats.java

@@ -261,7 +261,7 @@ private Stats(StreamInput in) throws IOException {
                 queryConcurrency = in.readVLong();
             }
 
-            if (in.getVersion().onOrAfter(Version.V_3_0_0)) {
+            if (in.getVersion().onOrAfter(Version.V_2_14_0)) {
                 searchIdleReactivateCount = in.readVLong();
             }
         }
@@ -475,7 +475,7 @@ public void writeTo(StreamOutput out) throws IOException {
                 out.writeVLong(queryConcurrency);
             }
 
-            if (out.getVersion().onOrAfter(Version.V_3_0_0)) {
+            if (out.getVersion().onOrAfter(Version.V_2_14_0)) {
                 out.writeVLong(searchIdleReactivateCount);
             }
         }