[bitcoin] Merged PR from ryanofsky: cmake: Install internal binaries to /libexec/ https://github.com/bitcoin/bitcoin/pull/31679

[bitcoin] Merged PR from fanquake: subtree: update crc32c subtree https://github.com/bitcoin/bitcoin/pull/33151

[bitcoin] Merged PR from fanquake: ci: Use mlc `v1` and fix typos https://github.com/bitcoin/bitcoin/pull/33125

[bitcoin] Merged PR from l0rinc: refactor,test: follow-ups to multi-byte block obfuscation https://github.com/bitcoin/bitcoin/pull/33039

[bitcoin] Merged PR from fanquake: contrib: drop use of `PermissionsStartOnly` & `Group=` https://github.com/bitcoin/bitcoin/pull/33044

[bitcoin] Merged PR from hebasto: kernel: create monolithic kernel static library https://github.com/bitcoin/bitcoin/pull/33077

[bitcoin] Merged PR from hebasto: cmake: Proactively avoid use of `SECP256K1_DISABLE_SHARED` https://github.com/bitcoin/bitcoin/pull/33101

[bitcoin] Merged PR from l0rinc: [IBD] multi-byte block obfuscation https://github.com/bitcoin/bitcoin/pull/31144

[bitcoin] Merged PR from Christewart: rpc: Fix 'getdescriptoractivity' RPCHelpMan, add test to verify fix https://github.com/bitcoin/bitcoin/pull/33119

[bitcoin] Merged PR from hebasto: refactor: Use immediate lambda to work around GCC bug 117966 https://github.com/bitcoin/bitcoin/pull/33113

[bitcoin] Merged PR from kevkevinpal: test: remove duplicated code in test/functional/wallet_migration.py https://github.com/bitcoin/bitcoin/pull/33122