Revert "cmake: fix #8729"

This reverts commit c019e057c2.

CMakeLists.txt

@@ -14326,6 +14326,13 @@ endif (gRPC_BUILD_TESTS)
 
 
 
+if (gRPC_INSTALL)
+  install(EXPORT gRPCTargets
+    DESTINATION ${CMAKE_INSTALL_CMAKEDIR}
+    NAMESPACE gRPC::
+  )
+endif()
+
 foreach(_config gRPCConfig gRPCConfigVersion)
   configure_file(tools/cmake/${_config}.cmake.in
     ${_config}.cmake @ONLY)

templates/CMakeLists.txt.template

@@ -618,6 +618,13 @@
   endif()
   </%def>
 
+  if (gRPC_INSTALL)
+    install(EXPORT gRPCTargets
+      DESTINATION <%text>${CMAKE_INSTALL_CMAKEDIR}</%text>
+      NAMESPACE gRPC::
+    )
+  endif()
+
   foreach(_config gRPCConfig gRPCConfigVersion)
     configure_file(tools/cmake/<%text>${_config}</%text>.cmake.in
       <%text>${_config}</%text>.cmake @ONLY)