x1499-1b client— update pot labware generation UI to support multiple samples in a pot—on hold pending decision

[sabrine33]

This story updates the UI as part of the #1142 changes.
The UI needs to support multiple samples within a pot.
In the updated block model, a block can contain multiple slots.

https://stan-uat.psd.sanger.ac.uk/lab/original_sample_processing?type=pot