Zero-release build is broken after JDK-8279047 due to UseHeavyMonitors is read-only

```
Updating support/src.zip
In file included from /root/df/jdk/src/hotspot/cpu/zero/vm_version_zero.hpp:30,
                 from /root/df/jdk/src/hotspot/share/runtime/vm_version.hpp:30,
                 from /root/df/jdk/src/hotspot/share/runtime/orderAccess.hpp:29,
                 from /root/df/jdk/src/hotspot/share/runtime/atomic.hpp:37,
                 from /root/df/jdk/src/hotspot/share/utilities/bitMap.hpp:29,
                 from /root/df/jdk/src/hotspot/share/memory/iterator.hpp:31,
                 from /root/df/jdk/src/hotspot/share/oops/oop.hpp:28,
                 from /root/df/jdk/src/hotspot/share/runtime/handles.hpp:29,
                 from /root/df/jdk/src/hotspot/share/code/oopRecorder.hpp:28,
                 from /root/df/jdk/src/hotspot/share/asm/codeBuffer.hpp:28,
                 from /root/df/jdk/src/hotspot/share/asm/assembler.hpp:28,
                 from /root/df/jdk/src/hotspot/share/asm/assembler.inline.hpp:28,
                 from /root/df/jdk/src/hotspot/cpu/zero/vm_version_zero.cpp:27:
/root/df/jdk/src/hotspot/cpu/zero/vm_version_zero.cpp: In static member function 'static void VM_Version::initialize()':
/root/df/jdk/src/hotspot/share/runtime/globals_extension.hpp:75:47: error: assignment of read-only location 'UseHeavyMonitors'
   75 | #define FLAG_SET_DEFAULT(name, value) ((name) = (value))
      | ~~~~~~~^~~~~~~~~
/root/df/jdk/src/hotspot/cpu/zero/vm_version_zero.cpp:50:5: note: in expansion of macro 'FLAG_SET_DEFAULT'
   50 | FLAG_SET_DEFAULT(UseHeavyMonitors, true);
      | ^~~~~~~~~~~~~~~~
gmake[3]: *** [/root/df/jdk/build/linux-x86_64-zero-release/hotspot/variant-zero/libjvm/objs/vm_version_zero.o] Error 1
gmake[3]: *** Waiting for unfinished jobs....
gmake[2]: *** [hotspot-zero-libs] Error 1
gmake[2]: *** Waiting for unfinished jobs....

ERROR: Build failed for target 'images' in configuration 'linux-x86_64-zero-release' (exit code 2)
Stopping sjavac server
```