cubicweb #1772135 [rqlrewrite] fix bug w/ several expressions and optional variable [resolved]

prioritynormal
typebug
done in3.12.8
load0.500
load left0.000
closed by#c3bf459268d7 [rqlrewrite] closes #1772135: 1. don't try to reuse a relation from another statement (eg because a subquery has been introduced) 2. _use_orig_term should consider the current statement