tSQLt.AssertEqualsTableSchema does not work with #temp tables

If you try the following, it will always pass.

```
CREATE TABLE #Actual(
    Id INT PRIMARY KEY,
    NoKey INT NULL
  );
  CREATE TABLE #Expected(
    Id BIT PRIMARY KEY,
    NoKey NVARCHAR(MAX) NULL
  );
  EXEC tSQLt.AssertEqualsTableSchema @Expected = '#Expected'. @Actual = '#Actual';
```