Windows Clang 18 fixes

This fixes the issues that prevent Clang 18 from compiling the game on windows. FMT 10.2.x was also needed for a windows only issue. Clang 19 would need more work.

I have a CI job on my test-x86-clang-win branch, but it needs cleanup and ccache doesn't seem to work correctly. If preferred I can add that to this MR.

We've already updated to fmtlib 11.1.0 internally, so I will do a separate change for public master to use that.

added 7 commits

• aa214b22...fa661b4a - 5 commits from branch KartKrew:master
• 7585e2b1 - Fix wrong size in K_BHeapPush Z_Realloc
• 58516b26 - windows clang fixes

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added 3 commits

• 58516b26...271c5312 - 2 commits from branch KartKrew:master
• 7d2fd86a - windows clang fixes

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Rebased and removed the fmt update commit.

BTW, clang 19.1(.1) works on linux if libdivide is updated (and GCC 15 judging by release notes). Is that also updated internally or should I push a commit for that? Windows on clang 19.1(.7) still has two errors related to nlohmann json.

added Bug label

resolved all threads

added 33 commits

• 7d2fd86a...c192f13d - 32 commits from branch KartKrew:master
• 650e24ff - windows clang fixes

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added 1 commit

• e893e006 - windows clang fixes

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added 1 commit

• 06696e78 - windows clang fixes

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resolved all threads

resolved all threads

approved this merge request

merged

mentioned in commit 508825df

mentioned in merge request !94 (merged)

mentioned in commit Superstarxalien/ringracers-freakybuild@a8f8e248