[CI] Refactor changed files integration (#9643)

# BEFORE
[run](https://github.com/twentyhq/twenty/actions/runs/12806801953)

![image](https://github.com/user-attachments/assets/f0a8ffe3-3fc0-42ca-b2ee-8a980606b5dd)
# AFTER
[run](https://github.com/twentyhq/twenty/actions/runs/12807034402)

![image](https://github.com/user-attachments/assets/5117c680-6804-416b-a8c8-bf00614ca453)

## Motivations:
- less workflow to whitelist as blocking for PRs
- less if condition per step

cons:
- quite verbose
- need to manually sync the `ci-NAME-status-check` needs list to any
other existing and should be dep jobs

## Version migration
Migrated to the latest `changed-files@45` version, getting rid of the
`set-output` usage warnings

## Tests runs:

With mutation:
- [Success
flow](https://github.com/twentyhq/twenty/actions/runs/12791958651/job/35661546343)
- [server-setup failure
flow](https://github.com/twentyhq/twenty/actions/runs/12792225779)
- [Other job failure
flow](https://github.com/twentyhq/twenty/actions/runs/12792313463), one
of the `inner` job failed
- [Manual cancel
flow](https://github.com/twentyhq/twenty/actions/runs/12792313463)
`ci-server-status-check` also has the `cancelled` status
- [Matrix
failure](https://github.com/twentyhq/twenty/actions/runs/12806883553)

Without mutation:
- [Nothing to do
flow](https://github.com/twentyhq/twenty/actions/runs/12792098384),
skipped `inner` job but `ci-server-status-check` still succeeded

## Notes
### Linter
We should setup a `yml` prettier and linter for the `.github/worfklows`
folder
### Centralized `ci-NAME-status-check` logic
Unfortunately I couldn't achieve to either make a `composite` action or
a `reusable-workflow`, as I could not access the correct layer to run
the `always` but also acessing the `needs` context

.github/workflows/ci-website.yaml

@@ -5,14 +5,21 @@ on:
       - main
 
   pull_request:
-    
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
 jobs:
+  prerequisites:
+    uses: ./.github/workflows/changed-files.yaml
+    with:
+      files: |
+        package.json
+        packages/twenty-website/**
   website-build:
+    needs: prerequisites
+    if: needs.prerequisites.outputs.any_changed == 'true'
     timeout-minutes: 3
     runs-on: ubuntu-latest
     services:
@@ -21,8 +28,8 @@ jobs:
         env:
           PGUSER_SUPERUSER: postgres
           PGPASSWORD_SUPERUSER: postgres
-          ALLOW_NOSSL: "true"
-          SPILO_PROVIDER: "local"
+          ALLOW_NOSSL: 'true'
+          SPILO_PROVIDER: 'local'
         ports:
           - 5432:5432
         options: >-
@@ -34,31 +41,27 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - name: Check for changed files
-        id: changed-files
-        uses: tj-actions/changed-files@v11
-        with:
-          files: 'package.json, packages/twenty-website/**'
 
       - name: Install dependencies
-        if: steps.changed-files.outputs.changed == 'true' 
         uses: ./.github/workflows/actions/yarn-install
 
       - name: Server / Create DB
-        if: steps.changed-files.outputs.any_changed == 'true'
         run: PGPASSWORD=postgres psql -h localhost -p 5432 -U postgres -d postgres -c 'CREATE DATABASE "default";'
 
       - name: Website / Run migrations
-        if: steps.changed-files.outputs.changed == 'true' 
-        run: npx nx database:migrate twenty-website 
+        run: npx nx database:migrate twenty-website
         env:
           DATABASE_PG_URL: postgres://postgres:postgres@localhost:5432/default
       - name: Website / Build Website
-        if: steps.changed-files.outputs.changed == 'true' 
         run: npx nx build twenty-website
         env:
           DATABASE_PG_URL: postgres://postgres:postgres@localhost:5432/default
-
-      - name: Mark as VALID
-        if: steps.changed-files.outputs.changed != 'true'  # If no changes, mark as valid
-        run: echo "No relevant changes detected. CI is valid."    
+  ci-website-status-check:
+    if: always() && !cancelled()
+    timeout-minutes: 1
+    runs-on: ubuntu-latest
+    needs: [prerequisites, website-build]
+    steps:
+      - name: Fail job if any needs failed
+        if: contains(needs.*.result, 'failure')
+        run: exit 1