sublime3: fix hardcoded /bin/bash when executing commands for build systems (#23561)

* sublime3: replace hardcoded /bin/bash with /usr/bin/env

exec.py in Default.package-sublime calls /bin/bash with subprocess.
See Issue #12011. Because of this builds could not be started from
withtin Sublime Text.

* sublime3: use wrapped of bash to fix internal build system

Without the wrapped version of bash (a symlink to $bash/bin/bash)
with LD_PRELOAD to glibc an relocation error occurs when trying
to run builds from within Sublime Text 3.  See Issue #12011.