Make the windows ID always a string

With some Wayland DEs/compositors, the APP id isn't always a base 10
number, so let's just leave it as a string instead of parsing it then
making it a string again.

emacs-everywhere.el

@@ -397,12 +397,11 @@ Never paste content when ABORT is non-nil."
                          (cdr emacs-everywhere-copy-command))))))
     (sleep-for emacs-everywhere-clipboard-sleep-delay) ; prevents weird multi-second pause, lets clipboard info propagate
     (when emacs-everywhere-window-focus-command
-      (let* ((window-id (emacs-everywhere-app-id emacs-everywhere-current-app))
-             (window-id-str (if (numberp window-id) (number-to-string window-id) window-id)))
+      (let ((window-id (emacs-everywhere-app-id emacs-everywhere-current-app)))
         (apply #'call-process (car emacs-everywhere-window-focus-command)
                nil nil nil
                (mapcar (lambda (arg)
-                         (replace-regexp-in-string "%w" window-id-str arg))
+                         (replace-regexp-in-string "%w" window-id arg))
                        (cdr emacs-everywhere-window-focus-command)))
         ;; The frame only has this parameter if this package initialized the temp
         ;; file its displaying. Otherwise, it was created by another program, likely
@@ -465,7 +464,7 @@ Please go to 'System Preferences > Security & Privacy > Privacy > Accessibility'
                  (`(wayland . KDE) (emacs-everywhere--app-info-linux-kde))
                  (_ (user-error "Unable to fetch app info with display server %S" emacs-everywhere--display-server)))))
     (make-emacs-everywhere-app
-     :id (string-to-number window-id)
+     :id window-id
      :class app-name
      :title window-title
      :geometry (list