Skip Hermes nightly override on stable branches

The test-ios-rntester, test-ios-helloworld actions and the
test_android_helloworld job unconditionally run use-hermes-nightly.js,
which replaces the pinned Hermes version with the latest nightly from
npm. On stable/release branches this is wrong: the pinned version from
version.properties should be used instead.

Add a `use-hermes-nightly` input (default true for backward compat) to
both composite actions, and guard the nightly override steps behind it.
In test-all.yml, pass `!endsWith(github.ref_name, '-stable')` so that
pushes to *-stable branches use the pinned Hermes version.

Author: motiz88

.github/actions/test-ios-helloworld/action.yml

@@ -10,6 +10,10 @@ inputs:
   flavor:
     description: The flavor of the build. Must be one of "Debug", "Release".
     default: Debug
+  use-hermes-nightly:
+    description: Whether to override pinned Hermes versions with the latest nightly
+    required: false
+    default: 'true'
 runs:
   using: composite
   steps:
@@ -24,10 +28,12 @@ runs:
       with:
         ruby-version: ${{ inputs.ruby-version }}
     - name: Set nightly Hermes versions
+      if: ${{ inputs.use-hermes-nightly == 'true' }}
       shell: bash
       run: |
         node ./scripts/releases/use-hermes-nightly.js
     - name: Run yarn install again, with the correct hermes version
+      if: ${{ inputs.use-hermes-nightly == 'true' }}
       uses: ./.github/actions/yarn-install
     - name: Download ReactNativeDependencies
       uses: actions/download-artifact@v7

.github/actions/test-ios-rntester/action.yml

@@ -18,6 +18,10 @@ inputs:
     description: Whether we have to build with Dynamic Frameworks. If this is set to true, it builds from source
     required: false
     default: false
+  use-hermes-nightly:
+    description: Whether to override pinned Hermes versions with the latest nightly
+    required: false
+    default: 'true'
 
 runs:
   using: composite
@@ -33,10 +37,12 @@ runs:
       with:
         ruby-version: ${{ inputs.ruby-version }}
     - name: Set nightly Hermes versions
+      if: ${{ inputs.use-hermes-nightly == 'true' }}
       shell: bash
       run: |
         node ./scripts/releases/use-hermes-nightly.js
     - name: Run yarn install again, with the correct hermes version
+      if: ${{ inputs.use-hermes-nightly == 'true' }}
       uses: ./.github/actions/yarn-install
     - name: Prepare IOS Tests
       if: ${{ inputs.run-unit-tests == 'true' }}

.github/workflows/test-all.yml

@@ -113,6 +113,7 @@ jobs:
         with:
           ruby-version: "3.2.0"
           flavor: Debug
+          use-hermes-nightly: ${{ !endsWith(github.ref_name, '-stable') }}
 
   test_ios_rntester_dynamic_frameworks:
     runs-on: macos-15-large
@@ -133,6 +134,7 @@ jobs:
           flavor: ${{ matrix.flavor }}
           use-frameworks: true
           run-unit-tests: false # tests for dynamic frameworks are already run in the test_ios_rntester job; this is to just a test build from source (no prebuilds)
+          use-hermes-nightly: ${{ !endsWith(github.ref_name, '-stable') }}
 
   test_ios_rntester:
     runs-on: macos-15-large
@@ -152,6 +154,7 @@ jobs:
         with:
           use-frameworks: ${{ matrix.frameworks }}
           flavor: ${{ matrix.flavor }}
+          use-hermes-nightly: ${{ !endsWith(github.ref_name, '-stable') }}
 
   test_e2e_ios_rntester:
     runs-on: macos-15-large
@@ -499,10 +502,12 @@ jobs:
       - name: Run yarn install
         uses: ./.github/actions/yarn-install
       - name: Set nightly Hermes versions
+        if: ${{ !endsWith(github.ref_name, '-stable') }}
         shell: bash
         run: |
           node ./scripts/releases/use-hermes-nightly.js
       - name: Run yarn install again, with the correct hermes version
+        if: ${{ !endsWith(github.ref_name, '-stable') }}
         uses: ./.github/actions/yarn-install
       - name: Prepare the Helloworld application
         shell: bash
@@ -536,6 +541,7 @@ jobs:
         with:
           ruby-version: 3.2.0
           flavor: Debug
+          use-hermes-nightly: ${{ !endsWith(github.ref_name, '-stable') }}
 
   test_ios_helloworld:
     runs-on: macos-15
@@ -558,6 +564,7 @@ jobs:
         with:
           flavor: ${{ matrix.flavor }}
           use-frameworks: ${{ matrix.use_frameworks }}
+          use-hermes-nightly: ${{ !endsWith(github.ref_name, '-stable') }}
 
   lint:
     runs-on: ubuntu-latest