VS: Fix support for rc /nologo flag in per-source COMPILE_FLAGS
Since !791 (merged) we now correctly use the rc flag
table to process the COMPILE_FLAGS flags of .rc source files instead
of incorrectly using the cl flag table as before. However, our rc
flag table is not complete. The /nologo flag was working before only
by accident because the cl flag table entry for it happened to match.
Add the proper entry to the rc flag table.
Fixes: #16991