Only propose configured apps during onboarding install step (#22712)

## What

- Onboarding "Install your first apps" now proposes only apps that are
actually installable: it intersects the onboarding list with
`findManyMarketplaceApps`, which the backend already filters to listed +
configured apps (all required server variables set).
- If none are available, the step auto-skips. If the marketplace query
fails, it shows an intentional fallback (heading + Skip) instead of
silently skipping or rendering an empty install card.
- `findManyMarketplaceApps` now accepts `universalIdentifiers`, so
onboarding fetches and configuration-checks only its own apps instead of
the entire catalog.

## Why

Previously the step rendered all hardcoded apps regardless of
configuration, only borrowing logos from the marketplace, so a user
could be offered an app the admin never configured. This centralizes
onboarding availability on the marketplace's existing logic and keeps
the query bounded as the marketplace grows.

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packages/twenty-front/src/modules/onboarding/effect-components/InstallAppsAutoSkipEffect.tsx

@@ -0,0 +1,35 @@
+import { useTriggerInstallAppsOnboardingStep } from '@/onboarding/hooks/useTriggerInstallAppsOnboardingStep';
+import { useEffect, useRef } from 'react';
+
+type InstallAppsAutoSkipEffectProps = {
+  onError: () => void;
+};
+
+export const InstallAppsAutoSkipEffect = ({
+  onError,
+}: InstallAppsAutoSkipEffectProps) => {
+  const triggerInstallAppsOnboardingStep =
+    useTriggerInstallAppsOnboardingStep();
+
+  // oxlint-disable-next-line twenty/no-state-useref
+  const hasSkippedRef = useRef(false);
+
+  useEffect(() => {
+    if (hasSkippedRef.current) {
+      return;
+    }
+    hasSkippedRef.current = true;
+
+    const skip = async () => {
+      try {
+        await triggerInstallAppsOnboardingStep([]);
+      } catch {
+        onError();
+      }
+    };
+
+    void skip();
+  }, [triggerInstallAppsOnboardingStep, onError]);
+
+  return null;
+};