chore: disable StrictMode, as it does more harm than good (#63)

For example, swapping modules in StrictMode doesn't work,
as it swaps twice, undoing the change.

next.config.js

@@ -2,6 +2,7 @@
 const nextConfig = {
   output: "export",
   distDir: "dist",
+  reactStrictMode: false,
 
   experimental: {
     webpackBuildWorker: true,