Add toolbox to vendor partition

Bug: 71861796
Test: no more denials on walleye for shell init scripts
Change-Id: I51eab267c95a915f927b0aaa7db9d678a83093c7

private/file_contexts

@@ -290,6 +290,7 @@
 /(vendor|system/vendor)(/.*)?                  u:object_r:vendor_file:s0
 /(vendor|system/vendor)/bin/sh                 u:object_r:vendor_shell_exec:s0
 /(vendor|system/vendor)/bin/toybox_vendor      u:object_r:vendor_toolbox_exec:s0
+/(vendor|system/vendor)/bin/toolbox            u:object_r:vendor_toolbox_exec:s0
 /(vendor|system/vendor)/etc(/.*)?              u:object_r:vendor_configs_file:s0
 
 /(vendor|system/vendor)/lib(64)?/egl(/.*)?     u:object_r:same_process_hal_file:s0