`show caches` breaks after seeing cached query alias

[lukoktonos]

`show caches` breaks after seeing cached query alias

[lukoktonos]

It looks like with @ethan-readyset's recent changes to show caches, show caches no longer breaks.

There is still a mis-routing of the alias select a from t1 where a = 1, but I believe we are tracking that as a separate ticket.

The first time we see the alias, we route to upstream, then later (I assume once the ViewsSynchronizer has told us to route to readyset), we get the error Could not find view q_2d6992ed8044c4d9.

127.0.0.1/noria=> select a from t1 where a = 1;
 a 
═══
(0 rows)

127.0.0.1/noria=> explain last statement;
 Query_destination │ ReadySet_error 
═══════════════════╪════════════════
 upstream          │ ok
(1 row)127.0.0.1/noria=> select a from t1 where a = 1;
 a 
═══
(0 rows)

127.0.0.1/noria=> explain last statement;
   Query_destination    │             ReadySet_error             
════════════════════════╪════════════════════════════════════════
 readyset_then_upstream │ Could not find view q_2d6992ed8044c4d9
(1 row)

Lowering priority accordingly

[ethan-readyset]

That mis-routing is covered by REA-3933, so I'm gonna close this as a duplicate