Added warning logs in `EnvelopeReceiverController` to handle
cases where stored procedures return `OUT_SUCCESS=false`.
For `PRSIG_API_ADD_DOC_RECEIVER_ELEM`, log `DOC_ID`,
`RECEIVER_ID`, and `Page`. For `PRSIG_API_ADD_HISTORY_STATE`,
log `EnvelopeUuid`. These changes enhance error visibility
and debugging.