Merge pull request #3383 from valentinewallace/2024-09-blinded-keysend-verify

Verify blinded keysend payments

diff --cc lightning/src/ln/blinded_payment_tests.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/onion_payment.rs
Simple merge