fix(android): fix null pointer exception at playback start with item metadata (#3879)

* fix(android): fix null pointer exception at playback start with item metadata

android/src/main/java/com/brentvatne/common/api/Source.kt

@@ -15,6 +15,7 @@ import com.brentvatne.common.toolbox.ReactBridgeUtils.safeGetMap
 import com.brentvatne.common.toolbox.ReactBridgeUtils.safeGetString
 import com.facebook.react.bridge.ReadableMap
 import java.util.Locale
+import java.util.Objects
 
 /**
  * Class representing Source props for host.
@@ -50,6 +51,8 @@ class Source {
      */
     var textTracksAllowChuncklessPreparation: Boolean = false
 
+    override fun hashCode(): Int = Objects.hash(uriString, uri, startPositionMs, cropStartMs, cropEndMs, extension, metadata, headers)
+
     /** return true if this and src are equals  */
     override fun equals(other: Any?): Boolean {
         if (other == null || other !is Source) return false