Remove the Option<RowId> argument in ComponentUiRegistry's methods

[abey79]

The reason for this argument to exist in the first place is to have the value around for the code paths which lead to EntityDataUi::entity_data_ui.

Of the remaining implementations of EntityDataUi, only Blob and TensorData actually make use of the row id, as a cache key. Passing None implicitly disable the thumbnail display. (Note that this can be a good thing in some contexts such as the dataframe view, because the cost of displaying those thumbnails is currently pretty high.)

Note that one codepath exists (<InstancePath as DataUi>::data_ui()) where the row id is obtained while reading the component itself.

In any case, EntityDataUi is meant to be removed (#6661), so this row_id argument should be removed everywhere.