fix: Avoid casting to table type when select= and media type handler are used

Previously using a generic mimetype handler failed when any kind of select= was given, because
we tried to cast the select-result to the original table type. With this change, this cast is
only applied when select=* is given implicitly or explicitly. This is the only case where this
makes sense, because this guarantees that correct columns are selected in the correct order for
this cast to succeed.

Resolves #3160

src/PostgREST/Query.hs

@@ -70,7 +70,6 @@ readQuery WrappedReadPlan{..} conf@AppConfig{..} apiReq@ApiRequest{iPreferences=
   resultSet <-
      lift . SQL.statement mempty $
       Statements.prepareRead
-        wrIdent
         (QueryBuilder.readPlanToQuery wrReadPlan)
         (if preferCount == Just EstimatedCount then
            -- LIMIT maxRows + 1 so we can determine below that maxRows was surpassed
@@ -157,7 +156,6 @@ invokeQuery rout CallReadPlan{..} apiReq@ApiRequest{iPreferences=Preferences{..}
   resultSet <-
     lift . SQL.statement mempty $
       Statements.prepareCall
-        crIdent
         rout
         (QueryBuilder.callPlanToQuery crCallPlan pgVer)
         (QueryBuilder.readPlanToQuery crReadPlan)
@@ -196,7 +194,6 @@ writeQuery MutateReadPlan{..} ApiRequest{iPreferences=Preferences{..}} conf =
   in
   lift . SQL.statement mempty $
     Statements.prepareWrite
-      mrIdent
       (QueryBuilder.readPlanToQuery mrReadPlan)
       (QueryBuilder.mutatePlanToQuery mrMutatePlan)
       isInsert