Do not capture the build-time value of $PATH in the 'emacs' executable
since this can noticeably increase the size of the closure of Emacs
with things like GCC being referenced.

--- emacs-30.1/lisp/loadup.el.orig
+++ emacs-30.1/lisp/loadup.el
@@ -638,7 +638,8 @@
                           ((equal dump-mode "dump") "emacs")
                           ((equal dump-mode "bootstrap") "emacs")
                           ((equal dump-mode "pbootstrap") "bootstrap-emacs.pdmp")
-                          (t (error "Unrecognized dump mode %s" dump-mode)))))
+                          (t (error "Unrecognized dump mode %s" dump-mode))))
+                              (exec-path nil))
         (when (and (featurep 'native-compile)
                    (equal dump-mode "pdump"))
           ;; Don't enable this before bootstrap is completed, as the