fix: Run post_install only if in_install flag is set
fix: Run post_install only if in_install flag is set

(cherry picked from commit 8c0ca13ab1684fe7bec6c7ef0fb1d55a2811afd7)

vjFaLk/frappe,vjFaLk/frappe,vjFaLk/frappe,vjFaLk/frappe