feat: loosen hil rts dir permissions

[sky-mart]

We need it to access RTSs as the worldcoin user.

homeMode makes the homedir drwx--x--x to allow ls
umask makes all files created by the gh-runner readable by user users

ls -lah ~/rts/
total 11G
drwx--x--x 6 gh-runner-user users 4.0K May 15 11:29 .
drwx--x--x 5 gh-runner-user users 4.0K May  4 11:11 ..
-rw-r--r-- 1 gh-runner-user users 5.1G May 15 11:28 2026-05-12-main-0-g3990400-diamond-25750643265-rts-diamond-dev.tar.zstd
-rw-r--r-- 1 gh-runner-user users 5.1G May 15 11:29 2026-05-14-main-0-gd1a4c38-diamond-25868449999-rts-diamond-dev.tar.zstd