Revert to using previous app build commands

Author: shaoltan-amazon

.github/workflows/examples-linux-tv-casting-app.yaml

@@ -54,19 +54,15 @@ jobs:
               with:
                   gh-context: ${{ toJson(github) }}
 
-            - name: Run bootstrap command
-              run: |
-                  source scripts/bootstrap.sh
-
             - name: Build Linux tv-app
               run: |
-                  gn gen --check --fail-on-unused-args --root=examples/tv-app/linux out/tv-app '--args=chip_crypto="boringssl" is_asan=true is_clang=true'
-                  ninja -C out/tv-app
+                  ./scripts/run_in_build_env.sh \
+                    "scripts/examples/gn_build_example.sh examples/tv-app/linux/ out/tv-app"
 
             - name: Build Linux tv-casting-app
               run: |
-                  gn gen --check --fail-on-unused-args --root=examples/tv-casting-app/linux out/tv-casting-app '--args=chip_casting_simplified=true chip_crypto="boringssl" is_asan=true is_clang=true'
-                  ninja -C out/tv-casting-app
+                  ./scripts/run_in_build_env.sh \
+                    "scripts/examples/gn_build_example.sh examples/tv-casting-app/linux/ out/tv-casting-app chip_casting_simplified=true"
 
             - name:
                   Test casting from Linux tv-casting-app to Linux tv-app -