Enable TestParse#test_disallowed_gloal_variable MRI test case

Author: andrykonchin

test/mri/excludes/TestParse.rb

@@ -1,5 +1,4 @@
 exclude :test_disallowed_class_variable, "/Users/andrykonchin/projects/truffleruby-ws/truffleruby/test/mri/tests/ruby/test_parse.rb:380:in `block in assert_disallowed_variable'."
-exclude :test_disallowed_gloal_variable, "https://github.com/ruby/prism/issues/2673"
 exclude :test_disallowed_instance_variable, "/Users/andrykonchin/projects/truffleruby-ws/truffleruby/test/mri/tests/ruby/test_parse.rb:380:in `block in assert_disallowed_variable'."
 exclude :test_dynamic_constant_assignment, "/Users/andrykonchin/projects/truffleruby-ws/truffleruby/test/mri/tests/ruby/test_parse.rb:155:in `test_dynamic_constant_assignment'."
 exclude :test_else_without_rescue, "[\"/Users/andrykonchin/projects/truffleruby-ws/truffleruby/test/mri/tests/ruby/test_parse.rb\", 21]."

test/mri/tests/ruby/test_parse.rb

@@ -377,10 +377,10 @@ def test_dsym
 
   def assert_disallowed_variable(type, noname, invalid)
     noname.each do |name|
-      assert_syntax_error("proc{a = #{name} }", /`#{Regexp.escape noname[0]}' without identifiers is not allowed as #{type} variable name|`#{Regexp.escape noname[0]}' is not allowed as #{type} variable name/)
+      assert_syntax_error("proc{a = #{name} }", /(`|')#{Regexp.escape noname[0]}' without identifiers is not allowed as #{type} variable name|(`|')#{Regexp.escape noname[0]}' is not allowed as #{type} variable name/)
     end
     invalid.each do |name|
-      assert_syntax_error("proc {a = #{name} }", /`#{Regexp.escape name}' is not allowed as #{type} variable name|`#{Regexp.escape noname[0]}' is not allowed as #{type} variable name/)
+      assert_syntax_error("proc {a = #{name} }", /(`|')#{Regexp.escape name}' is not allowed as #{type} variable name|(`|')#{Regexp.escape noname[0]}' is not allowed as #{type} variable name/)
     end
   end