src/routes/+page.server.js

export function load({ setHeaders }) {
	setHeaders({
		'Content-Type': 'text/html',
		'Content-Security-Policy': "require-trusted-types-for 'script';script-src 'unsafe-inline' 'self';style-src 'self' 'unsafe-inline';trusted-types svelte-trusted-html;"
	});
}