Change Details

``` Add key_io fuzzing harness. Fuzz additional functions in the hex fuzzing harness. Fuzz additional functions in the integer fuzzing harness. Fuzz additional functions in the script fuzzing harness. Fuzz additional functions in the transaction fuzzing harness. ``` Backport of core PR17926.

``` Add key_io fuzzing harness. Fuzz additional functions in the hex fuzzing harness. Fuzz additional functions in the integer fuzzing harness. Fuzz additional functions in the script fuzzing harness. Fuzz additional functions in the transaction fuzzing harness. ``` Backport of core [[https://github.com/bitcoin/bitcoin/pull/17926 | PR17926]].

``` Add key_io fuzzing harness. Fuzz additional functions in the hex fuzzing harness. Fuzz additional functions in the integer fuzzing harness. Fuzz additional functions in the script fuzzing harness. Fuzz additional functions in the transaction fuzzing harness. ``` Backport of core [[https://github.com/bitcoin/bitcoin/pull/17926 | PR17926]].