Under Wow64, disabling no-exec (done at the bottom of `alloc_module`) was failing.
Fixes crashes in games using older Steam DRM (where the EXE entry point is in a '.bind' section which is not marked executable)
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v2: wow64: Allow setting NtSetInformationProcess(ProcessExecuteFlags).
ntdll: Allow changes to DEP flags under Wow64.
https://gitlab.winehq.org/wine/wine/-/merge_requests/500