[bug] planning on duckdb attached to postgres results in wrong drop statement

[dberardo-com]

during planning

Failed models

  "...."."telemetry_data_sqlmesh"."corrected_tdata"

    Error:
      Failed to execute query "BEGIN TRANSACTION ISOLATION LEVEL REPEATABLE READ;
      DROP Table  IF EXISTS "sqlmesh__telemetry_data_sqlmesh"."telemetry_data_sqlmesh__corrected_tdata__272003323"": ERROR:  "telemetry_data_sqlmesh__corrected_tdata__272003323" is not a table
      HINT:  Use DROP VIEW to remove a view.

[dberardo-com]

and similarly, if i define those FULL models as simple VIEWs i get this other error

"...."."telemetry_data_sqlmesh"."corrected_tdata"

Error:
  Failed to execute query "BEGIN TRANSACTION ISOLATION LEVEL REPEATABLE READ;
  DROP Table  IF EXISTS "sqlmesh__telemetry_data_sqlmesh"."telemetry_data_sqlmesh__corrected_tdata__1525342231"": ERROR:  "telemetry_data_sqlmesh__corrected_tdata__1525342231" is not a table
  HINT:  Use DROP VIEW to remove a view.

[dberardo-com]

i believe this relates to my comment in #5464