doc: Document valgrind aarch64 clang workaround #33742

1. 
   maflcko commented at 9:07 am on October 30, 2025: member

   Fixes #29635

   The upstream bug will likely not be fixed any time soon, so it seems better to document the workaround and refer to the upstream bug.

   This also allows to use any clang version (instead of requiring 16), going forward.

2. doc: Document valgrind aarch64 clang workaround 666638c4b3
3. DrahtBot added the label Docs on Oct 30, 2025
4. 
   DrahtBot commented at 9:07 am on October 30, 2025: contributor

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/33742.

   Reviews

   See the guideline for information on the review process. A summary of reviews will appear here.

5. 
   maflcko commented at 2:23 pm on October 30, 2025: member

   Closing for now
6. maflcko closed this on Oct 30, 2025

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7. maflcko deleted the branch on Oct 30, 2025

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