dotnet.eclass: pass -S to file to disable seccomp

Files being installed by Portage are generally trusted but also the
syscalls allowed by file are quite broad anyway.

With e.g. new libc or sandbox version (or any number of things...), the
syscalls used by file can change which leads to its seccomp filter killing
the process. This is an acceptable tradeoff when users are calling file(1),
but it makes less sense with trusted input within Portage, especially
where it may lead to confusing errors (swallowed within pipes, subshells,
etc).

Indeed, it might even be the case that file(1) is broken, but the user
needs to complete a world upgrade to get a newer file/portage/???, but
can't because of various ebuilds (like ones using this eclass) failing.

Disable seccomp for these calls to keep working.

Bug: https://bugs.gentoo.org/811462
Bug: https://bugs.gentoo.org/815877
Bug: https://bugs.gentoo.org/889046
Signed-off-by: Sam James <[email protected]>

eclass/dotnet.eclass

@@ -1,4 +1,4 @@
-# Copyright 1999-2022 Gentoo Authors
+# Copyright 1999-2023 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 # @ECLASS: dotnet.eclass
@@ -131,7 +131,7 @@ dotnet_multilib_comply() {
 		then
 			for exe in "${ED}/usr/bin"/*
 			do
-				if [[ "$(file "${exe}")" == *"shell script text"* ]]
+				if [[ "$(file -S "${exe}")" == *"shell script text"* ]]
 				then
 					sed -r -i -e ":/lib(/|$): s:/lib(/|$):/$(get_libdir)\1:" \
 						"${exe}" || die "Sedding some sense into ${exe} failed"