Fixes#21198
decoder objects were setting propq as NULL.
Added a set_ctx/settable_ctx to all decoders that should supply
a property query parameter to internal functions.
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21219)
