fix: also make certain we are not auto installing inside shims by che…

…cking

__MISE_SHIM

src/cli/exec.rs

@@ -68,7 +68,8 @@ impl Exec {
             // in that case the user probably just wants that one tool
             missing_args_only: !self.tool.is_empty()
                 || !SETTINGS.exec_auto_install
-                || !console::user_attended_stderr(),
+                || !console::user_attended_stderr()
+                || *env::__MISE_SHIM,
             resolve_options: Default::default(),
         };
         measure!("install_arg_versions", {