Add nuxt plugin to address 'stuck' dark color mode.

website/plugins/colorMode.ts

@@ -0,0 +1,9 @@
+// Forces light color mode even if localStorage already contains saved preference.
+// `colorMode.preference` setting from `nuxt.config.ts` is not enough in this case.
+export default defineNuxtPlugin((nuxtApp) => {
+    const colorMode = useColorMode();
+    nuxtApp.hook("app:mounted", () => {
+        colorMode.preference = "light";
+        colorMode.value = "light";
+    });
+});