test: Prove+document ConstevalFormatString/tinyformat parity (!30933) · Merge requests · bitcoin / bitcoin · GitLab

Placeholder github Source User requested to merge github/fork/hodlinator/2024/09/tinyformat_consteval_parity into master Sep 19, 2024

Clarifies and puts the extent of parity under test.

Broken out from #30546 based on https://github.com/bitcoin/bitcoin/pull/30546#discussion_r1755013263 and https://github.com/bitcoin/bitcoin/pull/30546#discussion_r1756495304.