pi/2 -> 1.57 in recovery spin

nav2_behavior_tree/include/nav2_behavior_tree/spin_action.hpp

@@ -47,7 +47,7 @@ public:
 
   static const BT::NodeParameters & requiredNodeParameters()
   {
-    static BT::NodeParameters params = {{"spin_dist", "1.59"}};
+    static BT::NodeParameters params = {{"spin_dist", "1.57"}};
     return params;
   }
 };

nav2_bt_navigator/behavior_trees/navigate_w_replanning_and_recovery.xml

@@ -23,7 +23,7 @@
       <SequenceStar name="RecoveryActions">
         <ClearEntireCostmap service_name="local_costmap/clear_entirely_local_costmap"/>
         <ClearEntireCostmap service_name="global_costmap/clear_entirely_global_costmap"/>
-        <Spin spin_dist="1.59"/>
+        <Spin spin_dist="1.57"/>
         <Wait wait_duration="5"/>
       </SequenceStar>
     </RecoveryNode>