Re-enable objc example project build

Author: Corey Earwood

.github/workflows/build.yml

@@ -677,8 +677,8 @@ jobs:
         run: |
           xcodebuild -scheme whisper-Package -destination 'generic/platform=iOS'
 
-#- name: Build objc example
-#  run: xcodebuild -project examples/whisper.objc/whisper.objc.xcodeproj -scheme whisper.objc -configuration ${{ matrix.build }} -sdk iphoneos build
+- name: Build objc example
+  run: xcodebuild -project examples/whisper.objc/whisper.objc.xcodeproj -scheme whisper.objc -configuration ${{ matrix.build }} -sdk iphoneos build
 
       - name: Build swiftui example
         run: xcodebuild -project examples/whisper.swiftui/whisper.swiftui.xcodeproj -scheme WhisperCppDemo -configuration ${{ matrix.build }} -sdk iphoneos CODE_SIGNING_REQUIRED=NO CODE_SIGN_IDENTITY= -destination 'generic/platform=iOS' build