Update CI workflows to conditionally use optimized runners and adjust LTO settings based on release branch

.github/workflows/linux-release-build.yml

@@ -16,7 +16,7 @@ jobs:
   build-linux:
     permissions:
       contents: write
-    runs-on: ubuntu-latest
+    runs-on: ${{ inputs.release-branch == 'release' && 'warp-ubuntu-latest-x64-8x' || 'ubuntu-latest' }}
     strategy:
       fail-fast: false
       matrix:
@@ -125,6 +125,7 @@ jobs:
       - name: Build
         env:
           SURFER_COMPAT: ${{ matrix.arch }}
+          ZEN_RELEASE_BRANCH: ${{ inputs.release-branch }}
         continue-on-error: true
         run: |
           export SURFER_PLATFORM="linux"

.github/workflows/macos-release-build.yml

@@ -15,7 +15,7 @@ on:
 jobs:
   mac-build:
     name: Build macOS - ${{ matrix.arch }}
-    runs-on: macos-14
+    runs-on: ${{ inputs.release-branch == 'release' && 'warp-macos-14-arm64-6x' || 'macos-14' }}
 
     strategy:
       fail-fast: false
@@ -115,15 +115,7 @@ jobs:
       - name: Build Zen
         env:
           SURFER_COMPAT: ${{ matrix.arch }}
-        run: |
-          export SURFER_PLATFORM="darwin"
-          if test "${{ matrix.arch }}" = "x86_64"; then
-            export ZEN_DISABLE_LTO=1
-          fi
-          sh .github/workflows/src/release-build.sh
-
-      - name: Rebuild Zen if failed
-        if: failure()
+          ZEN_RELEASE_BRANCH: ${{ inputs.release-branch }}
         run: |
           export SURFER_PLATFORM="darwin"
           sh .github/workflows/src/release-build.sh

.github/workflows/windows-release-build.yml

@@ -22,7 +22,7 @@ on:
 jobs:
   windows-build:
     name: Build Windows - ${{ matrix.arch }}
-    runs-on: ubuntu-latest
+    runs-on: ${{ (inputs.release-branch == 'release' && !(inputs.generate-gpo && matrix.arch == 'aarch64')) && 'warp-ubuntu-latest-x64-8x' || 'ubuntu-latest' }}
 
     strategy:
       fail-fast: false
@@ -156,6 +156,7 @@ jobs:
         if: ${{ !(inputs.generate-gpo && matrix.arch == 'aarch64') }}
         env:
           SURFER_COMPAT: ${{ matrix.arch }}
+          ZEN_RELEASE_BRANCH: ${{ inputs.release-branch }}
         run: |
           set -x
           dos2unix configs/windows/mozconfig