Don't incur a "_load_all" of the lazy_loader while looking for mod_init.
Don't incur a "_load_all" of the lazy_loader while looking for mod_init.

Since we were checking if mod_init is in the loader dict-- and we still allow for module merging (#20540) we will do a load_all for every module without mod_init. This patch makes it so we load w/e module the function is in, then check if we have loaded a mod_init. This cuts out ~600ms on my local simple state.sls runs

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt