Introduce an additional constructor to RubyRange that allows one to specify the frozen state of the object at creation.

Author: MattAlp

src/main/java/org/truffleruby/core/range/RubyRange.java

@@ -20,13 +20,19 @@
 public abstract class RubyRange extends RubyDynamicObject {
 
     public boolean excludedEnd;
-    public boolean frozen = false;
+    public boolean frozen;
 
     public RubyRange(RubyClass rubyClass, Shape shape, boolean excludedEnd) {
         super(rubyClass, shape);
         this.excludedEnd = excludedEnd;
     }
 
+    public RubyRange(RubyClass rubyClass, Shape shape, boolean excludedEnd, boolean frozen) {
+        super(rubyClass, shape);
+        this.excludedEnd = excludedEnd;
+        this.frozen = frozen;
+    }
+
     @ExportMessage
     protected void freeze() {
         frozen = true;