[ruby/syntax_suggest] Add temp support for 3.2.0-preview{3,2,1}

This SyntaxError#path feature only exists in Ruby HEAD. Until it is released in a preview I want to continue to support existing releases of 3.2.0 (and also so CI will continue to work, as it still uses a preview version to execute tests).

https://github.com/ruby/syntax_suggest/commit/9862032465

lib/syntax_suggest/core_ext.rb

@@ -25,7 +25,16 @@ if SyntaxError.method_defined?(:detailed_message)
       require "syntax_suggest/api" unless defined?(SyntaxSuggest::DEFAULT_VALUE)
 
       message = super
-      file = path
+
+      file = if respond_to?(:path)
+        path
+      elsif highlight
+        # This branch will be removed when the next Ruby 3.2 preview is released with
+        # support for SyntaxError#path
+        SyntaxSuggest::PathnameFromMessage.new(super(highlight: false, **kwargs)).call.name
+      else
+        SyntaxSuggest::PathnameFromMessage.new(message).call.name
+      end
 
       if file
         file = Pathname.new(file)