Return nil for beginless ranges where the end is not numeric

for ruby 3.2

Author: rwstauner

src/main/ruby/truffleruby/core/range.rb

@@ -509,7 +509,9 @@ def cover?(value)
   end
 
   def size
-    return Float::INFINITY if Primitive.nil? self.begin
+    if Primitive.nil? self.begin
+      return Primitive.is_a?(self.end, Numeric) ? Float::INFINITY : nil
+    end
     return nil unless Primitive.is_a?(self.begin, Numeric)
     return Float::INFINITY if Primitive.nil? self.end