[Bug libstdc++/91947] std::filesystem::file_size will return wrong value on 32bit platforms with large files support

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91947
Bug 91947 depends on bug 81091, which changed state.

Bug 81091 Summary: libstdc++ not built with large file support
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81091

           What    |Removed                     |Added
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             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED