Fix Turnstile unable to read the siteKey

It seems that Nuxt Turnstile's way of setting the key in `runtimeConfig`
is broken and doesn't work properly, resulting in an error in runtime,
because it has to be set. This commit sets the key in `runtimeConfig`
manually instead, which seems to fix the issue.

nuxt.config.ts

@@ -305,6 +305,8 @@ export default defineNuxtConfig({
  // @ts-ignore
  globalThis.CF_PAGES_COMMIT_SHA ||
  'unknown',
+
+ turnstile: { siteKey: '0x4AAAAAAAW3guHM6Eunbgwu' },
  },
  },
  typescript: {
@@ -362,9 +364,6 @@ export default defineNuxtConfig({
  }
  },
  },
- turnstile: {
- siteKey: '0x4AAAAAAAW3guHM6Eunbgwu',
- },
  nitro: {
  moduleSideEffects: ['@vintl/compact-number/locale-data'],
  },