Use newer MOM6 ocean mask when running with docn

### Issue Type

Infrastructure Update

### Issue Description

MOM6 recently changed the mask for the workhorse 2/3° grid; the old grid is available as `tx2_3v2` and the new grid is `tx2_3v3`. For consistency with the mask used in the fully coupled runs, we recommend CAM switches from using grids defined with `_mt232` (signifying the mask is the `tx2_3v2` grid) to grids with `_mt233` (use the new ocean grid for the mask). This should be addressed in the test suite (53 tests in [`cime_config/testdefs/testlist_cam.xml`](https://github.com/ESCOMP/CAM/blob/cam_development/cime_config/testdefs/testlist_cam.xml) currently use `_mt232` and none use `_mt233`) as well as the documentation -- the recommended / scientifically supported configurations should all be `_mt233`.

In the [`modelgrid_aliases_nuopc.xml`](https://github.com/ESMCI/ccs_config_cesm/blob/main/modelgrid_aliases_nuopc.xml#L1410-L1415) file in `ccs_config_cesm` I already see blocks like

```xml

ne30np4.pg3
ne30np4.pg3
ne30np4.pg3
tx2_3v3

```

As far as I can tell, there is no `f10_f10_mt233` grid but every other grid that has `_mt232` has a corresponding `_mt233`; I'll open a corresponding issue to add the `f10_f10_mt233` grid because I do see it in your test lists.

### Will this change answers?

Yes

### Will you be implementing this yourself?

Yes