CMakeRCInformation: Recognize 'windres' tools with '.' in name (#14865)
A 64-bit MinGW windres is named "i686-w64-mingw32.shared-windres". The get_filename_component NAME_WE mode may strip the ".shared-windres" part and cause the result to no longer contain "windres". Instead, match the "windres" name in the full CMAKE_RC_COMPILER value first, and use the get_filename_component code path only for other resource compilers.
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