feat(android): expose JSON string constructor for JSArray (#2879)

Co-authored-by: Keagan McClelland <keagan.mcclelland@gmail.com>

Author: jcesarmobile

android/capacitor/src/main/java/com/getcapacitor/JSArray.java

@@ -13,6 +13,10 @@ public JSArray() {
     super();
   }
 
+  public JSArray(String json) throws JSONException {
+    super(json);
+  }
+
   public JSArray(Collection copyFrom) {
     super(copyFrom);
   }