Change Details

``` Add fuzzing harnesses for functions/classes in chain.h and protocol.h. ``` Backport of core PR18445.

``` Add fuzzing harnesses for functions/classes in chain.h and protocol.h. ``` Backport of core [[https://github.com/bitcoin/bitcoin/pull/18445 | PR18445]].

``` Add fuzzing harnesses for functions/classes in chain.h and protocol.h. ``` Backport of core [[https://github.com/bitcoin/bitcoin/pull/18445 | PR18445]].