miniscript, refactor: Make operator""_mst consteval (re-take) #32564

1. 
   hebasto commented at 1:47 pm on May 19, 2025: member

   Same as #28657, but without the refactoring required to work around fixed MSVC bugs.

   The second commit has been taken from #29167.

2. Revert "miniscript: make operator_mst consteval"

   This reverts commit 63317103c9f2b0635558da814567bb79c17ae851.

   bc4fb79a4e
3. miniscript: Make `operator""_mst` `consteval` b1f7877bb7
4. hebasto added the label Refactoring on May 19, 2025
5. 
   DrahtBot commented at 1:47 pm on May 19, 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/32564.

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   Conflicts

   Reviewers, this pull request conflicts with the following ones:

   • #31713 (miniscript refactor: Remove unique_ptr-indirection (#30866 follow-up) by hodlinator)

   If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.

6. DrahtBot added the label CI failed on May 19, 2025
7. DrahtBot removed the label CI failed on May 20, 2025
8. fanquake requested review from sipa on May 20, 2025
9. fanquake assigned darosior on May 20, 2025
10. fanquake unassigned darosior on May 20, 2025
11. fanquake requested review from darosior on May 20, 2025

Contributors
hebasto DrahtBot

Review Requested
sipa darosior

Labels
Refactoring