fix(ci): Move checkout before platform-check composite action

Local composite actions (uses: ./.github/actions/...) require the
repository to be checked out first. Move the actions/checkout step
before platform-check and make it unconditional so the action file
is available when GitHub Actions resolves it.

Author: alwx

.github/workflows/sample-application-expo.yml

@@ -59,6 +59,8 @@ jobs:
           - platform: 'android'
             ios-use-frameworks: 'dynamic-frameworks'
     steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+
       - name: Check if platform is needed
         id: platform-check
         uses: ./.github/actions/platform-check
@@ -69,9 +71,6 @@ jobs:
           needs_android: ${{ needs.detect-changes.outputs.needs_android }}
           needs_web: ${{ needs.detect-changes.outputs.needs_web }}
 
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
-        if: ${{ steps.platform-check.outputs.skip != 'true' }}
-
       - name: Enable Corepack (NPM)
         if: ${{ steps.platform-check.outputs.skip != 'true' && matrix.platform != 'ios' }}
         run: npm i -g corepack

.github/workflows/sample-application.yml

@@ -74,6 +74,8 @@ jobs:
           - ios-use-frameworks: 'dynamic-frameworks'
             platform: 'macos'
     steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+
       - name: Check if platform is needed
         id: platform-check
         uses: ./.github/actions/platform-check
@@ -83,9 +85,6 @@ jobs:
           needs_ios: ${{ needs.detect-changes.outputs.needs_ios }}
           needs_android: ${{ needs.detect-changes.outputs.needs_android }}
 
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
-        if: ${{ steps.platform-check.outputs.skip != 'true' }}
-
       - name: Enable Corepack (NPM)
         if: ${{ steps.platform-check.outputs.skip != 'true' && matrix.platform == 'android' }}
         run: npm i -g corepack
@@ -249,6 +248,8 @@ jobs:
             build-type: 'production'
 
     steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+
       - name: Check if platform is needed
         id: platform-check
         uses: ./.github/actions/platform-check
@@ -258,9 +259,6 @@ jobs:
           needs_ios: ${{ needs.detect-changes.outputs.needs_ios }}
           needs_android: ${{ needs.detect-changes.outputs.needs_android }}
 
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
-        if: ${{ steps.platform-check.outputs.skip != 'true' }}
-
       - name: Install Maestro
         if: ${{ steps.platform-check.outputs.skip != 'true' }}
         uses: dniHze/maestro-test-action@bda8a93211c86d0a05b7a4597c5ad134566fbde4 # pin@v1.0.0