Update sort tests to reduce the number of API calls and data dependence

[jpaten]

Need

Currently the testSortAzul function in testFunctions.ts, which runs the table sort tests, leads to a large number of backend calls and has the potential of failing if the table contains any blank cells. The current test is as follows:

• Load the specified tab
• For each default/pre-enabled column that is marked as the test configuration as "sortable":
  • Check that the first cell in the column is not blank and is visible
  • Click the column header to sort it
  • Check that the first cell in the column is not blank and is visible
  • Click the column header to sort it in the inverse direction
  • Check that the first cell in the column is not blank and is visible
• Pass the test if this succeeds for each default column

Approach

• Sort every sortable default column on each tab once, to reduce the number of API calls made
• Remove the check that the first cell in the sorted column is not blank to reduce data dependence
• Add a check that the "sorted" icon (with test id SouthRoundedIcon) is only visible on the sorted column

[MillenniumFalconMechanic]

Approach LGTM, thanks Jonah!