Fix byte-compile hook failure when package is already installed

Emacs outputs Unicode curly quotes in messages when the locale is
UTF-8, but the grep filter in byte-compile.sh only matches ASCII
quotes. This caused the pre-commit hook to fail on first run whenever
package-delete produced output (e.g. after a version bump), then pass
on retry because the package was already gone.

Force text-quoting-style to straight so the output is always ASCII.

Author: mwolson

scripts/byte-compile-local.el

@@ -1,5 +1,6 @@
 ;; byte-compile-local.el --- -*- lexical-binding: t -*-
 
+(setq text-quoting-style 'straight) ; keep quotes ASCII for grep filters
 (require 'treesit) ; to silence an autoload warning, seems like emacs bug
 (require 'package)
 (package-initialize)