ci: consider sdkconfig.defaults.TARGET_NAME in examples and test apps

tools/find_build_apps/cmake.py

@@ -53,7 +53,7 @@ class CMakeBuildSystem(BuildSystem):
         # Note: the build system supports taking multiple sdkconfig.defaults files via SDKCONFIG_DEFAULTS
         # CMake variable. However here we do this manually to perform environment variable expansion in the
         # sdkconfig files.
-        sdkconfig_defaults_list = ["sdkconfig.defaults"]
+        sdkconfig_defaults_list = ["sdkconfig.defaults", "sdkconfig.defaults." + build_item.target]
         if build_item.sdkconfig_path:
             sdkconfig_defaults_list.append(build_item.sdkconfig_path)