Disable login captcha if backend has no captcha secret (#5288)

* Add /_internal/globals route

* Don't show login captcha if backend claims it's disabled

* try to re-add tombi

* typos

* Assume captcha enabled if globals route is unreachable

* Prepare frontend fixes

apps/frontend/src/pages/auth/sign-up.vue

@@ -108,11 +108,11 @@
 				</IntlFormatted>
 			</p>
 
-			<HCaptcha ref="captcha" v-model="token" />
+			<HCaptcha v-if="globals?.captcha_enabled" ref="captcha" v-model="token" />
 
 			<button
 				class="btn btn-primary continue-btn centered-btn"
-				:disabled="!token"
+				:disabled="globals?.captcha_enabled ? !token : false"
 				@click="createAccount"
 			>
 				{{ formatMessage(messages.createAccountButton) }} <RightArrowIcon />
@@ -209,6 +209,15 @@ if (auth.value.user) {
 
 const captcha = ref()
 
+const { data: globals } = await useAsyncData('auth-globals', async () => {
+	try {
+		return await useBaseFetch('globals', { internal: true })
+	} catch (err) {
+		console.error('Error fetching globals:', err)
+		return { captcha_enabled: true }
+	}
+})
+
 const email = ref('')
 const username = ref('')
 const password = ref('')