Merge pull request #2847 from TheBlueMatt/2024-01-bindings-upstream

Misc Tweaks for bindings

diff --cc fuzz/src/chanmon_consistency.rs
Simple merge

diff --cc fuzz/src/full_stack.rs
Simple merge

diff --cc lightning-background-processor/src/lib.rs
Simple merge

diff --cc lightning/src/ln/channelmanager.rs
Simple merge

diff --cc lightning/src/ln/functional_test_utils.rs
Simple merge

diff --cc lightning/src/ln/functional_tests.rs
Simple merge

diff --cc lightning/src/onion_message/messenger.rs
Simple merge

diff --cc lightning/src/util/test_utils.rs
Simple merge