Trust the default perspective scratch buffer contents

Without this, by default trying to interact with a new perspective puts the "Disabline elisp-flymake-byte-compile due to untrusted content" message to popup in the minibuffer creating an annoying UX. Regular scratch should trusted in Emacs[1][2] but that doesn't propogate here [1] https://lists.gnu.org/archive/html/emacs-devel/2025-02/msg01023.html [2] https://github.com/emacs-mirror/emacs/commit/8b6c6cffd1f7