Mathesar doesn't support scenario where role has no select on table but on table columns

[pavish]

Description

• Create a table.
  • Lets say: "Table 1", with columns "id", "somecolumn", and "anothercolumn".
• Grant select to a different role to specific columns in that table, but on entirely on the table.

  grant select(id), SELECT (somecolumn) on "Table 1" to mathesar;
  

• Query that table from psql. Notice that the query works as expected. The granted columns are returned and the column without privilege throws an error when selected.

  dbtest1=> select id, somecolumn from "Table 1";
  id | somecolumn 
  ----+------------
   1 | 
   2 | 
   3 | 
   4 | 
   5 | 
  (5 rows)
  
  dbtest1=> select id, somecolumn, anothercolumn from "Table 1";
  ERROR:  permission denied for table Table 1
  
  

• Now, open the table in Mathesar. Notice the following empty page:
• 

Expected

• We should be able to view the table in this scenario.