CXXCBC-695: Always return unwrapped doc_exists from txns insert#771

DemetrisChr merged 1 commit intocouchbase:maincouchbase/couchbase-cxx-client:mainfrom

DemetrisChr:CXXCBC-695-unwrap-doc-existsDemetrisChr/couchbase-cxx-client:CXXCBC-695-unwrap-doc-existsCopy head branch name to clipboard