Fixes #4710.

📜 Changelog

• Code cleanups:
  • Removed compiler bug workarounds.
• Infrastructure improvements:
  • Updated dependencies.
    • Updated build compiler to VS 2022 17.13 Preview 3.
    • Updated Clang to 19.1.1 (now required).

⚙️ Commits

• For CUDA, add '-n' (no reboot) and limit installed components to 'nvcc_12.4'.
  • This makes the installation significantly faster, and prevents the installer from hanging (which started happening in this toolset update for unknown reasons).
• New pool.
• VS 2022 17.13 Preview 3 (not yet required).
  • We still can't require 17.13 due to the MSVC-internal toolset not having been updated yet.
• Clang 19 (required).
• EDG: Remove workaround for VSO-1898933.
• EDG: Remove workarounds for DevCom-10678753.
• Clang: Expand workarounds for LLVM-56507.
  • This has gotten significantly worse, so I'm skipping the entire tests now. It's limited to Clang x86, so I don't care about the loss of coverage.
• Clang: Remove workarounds for LLVM-75404.
• Clang: Remove workarounds for what was thought to be LLVM-61763.
• Clang: Remove workarounds in libcxx/expected_results.txt.
• C1XX: Reported VSO-2338829.
• C1XX: Reported VSO-2338880.
• C1XX: Record DevCom-10808176 as fixed in 17.14 Preview 1.
• VCRuntime: Record DevCom-10373274 as fixed in 17.14 Preview 1.
• C1XX: Record VSO-2293247 as fixed in 17.13 Preview 4.
  • 17.13 Preview 3 didn't contain any MSVC toolset changes (only EDG and Clang), hence the delay.
• LLVM-54051 was fixed, but this should be a perma-workaround.
  • Testing CTAD for alias templates is something for a compiler test suite. It isn't relevant to how <format> works, and the specific way we're constructing temporaries with braces would pose problems if we tried to use CTAD (as we could deduce basic_string<const char *> which is bogus).
• Expect clang-format 19.1.1.
• Update .clang-format defaults.
• New option: Drop empty lines at start of file.
  • This doesn't result in any changes now, but will prevent such empty lines from being added in the future.
• Add parens to avoid clang-format inserting icky spaces.
• Suppress clang-format to avoid functional damage and poor formatting.
• Change C casts to static_casts in tr1, to avoid clang-format inserting spaces.
  • We don't usually clean up tr1, but these are tiny and C casts are icky.
• clang-format, no manual changes: Improve CTAD.
• clang-format, no manual changes: Add spaces to pointers to members.
• clang-format, no manual changes: Put braces on separate lines.
• clang-format, no manual changes: Decrease indentation when wrapping (with a tiny bit of rewrapping).
• clang-format, no manual changes: Slightly adjust how multi-line for-loops are indented.
• clang-format, no manual changes: Reasonable rewrapping.
• Change ALL pragma warning suppress to push-disable-pop in test code.
  • Sometimes expanding the scope slightly for clarity. This is because clang-format changed one line into three, breaking the suppress in P0083R3_splicing_maps_and_sets.
    We already cleaned up the product code to avoid this waste of time, in Improve warning suppressions for header units #3069 on 2022-09-03.
• Restore MSVC-internal skips for ADDITIONAL_COMPILE_FLAGS.
  • These were marked as "These tests also need ADDITIONAL_COMPILE_FLAGS to silence warnings, but only for Clang 18" but this still repros with Clang 19. (They emit -Wmissing-designated-field-initializers warnings that are silenced by ADDITIONAL_COMPILE_FLAGS(gcc-style-warnings): -Wno-missing-field-initializers.) Restore them, and group them with the other skips.
• Rephrase "CONTEST / C1XX" to "MSVC".
  • "Contest" was an old MSVC-internal test harness that we no longer use, so this was confusing.

STL-ASan-CI passed.