cql3: statement_restrictions: don't capture structured bindings in lambdas
cql3: statement_restrictions: don't capture structured bindings in lambdas

Clang does not yet implement p1091r3, which allows lambdas
to capture structured bindings. To accomodate it, don't
use structured bindings for variables that are later
captured.

scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla