Any `Comparable` should be sortable via the UI

[chipkent]

LocalDate and LocalTime columns can not be sorted via the UI.

Use this code to create a table. Neither column can be sorted in the table.

from deephaven import empty_table

t = empty_table(10).update([
    "DT = '2023-01-01' + i * 'P1d'",
    "LT = '12:34:56'.plus(i * 'PT1s')",
    ])

m = t.meta_table

Note: a Comparable groovy test case is In the comments below.