backport: Merge bitcoin/bitcoin#27302, 27334, 27425#6689

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vijaydasmp wants to merge 2 commits intodashpay:developfrom

vijaydasmp:May_2025_03

Commits on Jun 6, 2025

Merge bitcoin/bitcoin#27334: util: implement `noexcept` move assignment & move ctor for `prevector`

achow101
authored and
vijaydasmp
committed
Merge bitcoin/bitcoin#27957: net: remove unused `CConnmanTest`

fanquake
authored and
vijaydasmp
committed