modify playSpeed from 1.0 to 1

Author: erwinpan1

examples/chef/devices/rootnode_basicvideoplayer_0ff86e943b.matter

@@ -2596,7 +2596,7 @@ endpoint 1 {
     ram      attribute startTime default = 0x00;
     ram      attribute duration default = 0;
     callback attribute sampledPosition;
-    ram      attribute playbackSpeed default = 1.0;
+    ram      attribute playbackSpeed default = 1;
     ram      attribute seekRangeEnd;
     ram      attribute seekRangeStart;
     callback attribute generatedCommandList;

examples/chef/devices/rootnode_basicvideoplayer_0ff86e943b.zap

@@ -3376,7 +3376,7 @@
               "storageOption": "RAM",
               "singleton": 0,
               "bounded": 0,
-              "defaultValue": "1.0",
+              "defaultValue": "1",
               "reportable": 1,
               "minInterval": 1,
               "maxInterval": 65534,