Handle RLS dependencies in inlined set-returning functions properly.

 Handle RLS dependencies in inlined set-returning functions properly.
 
 If an SRF in the FROM clause references a table having row-level
 security policies, and we inline that SRF into the calling query,
 we neglected to mark the plan as potentially dependent on which
 role is executing it.  This could lead to later executions in the
 same session returning or hiding rows that should have been hidden
 or returned instead.
 
 Our thanks to Wolfgang Walther for reporting this problem.
 
 Stephen Frost and Tom Lane
 
 Security: CVE-2023-2455