Renamed dataset resulted in display-related error

[Evadzi]

Expected behavior

I do not expect renaming of Dataset in Workflow to result in any data display-related error

Actual behavior

When a dataset is generated in Cate 2.0.0. dev-20 for a particular region (i.e ds_1), and the data is renamed to e.g. test_1, any new generated dataset (for any region) will keep the image of the previous ds_1 that has been renamed, although it will be displayed for the new region

Steps to reproduce the problem

You can test with any esa cci data

# Step 1
test1 = cate.ops.open_dataset(ds_id="esacci.SEALEVEL.mon.IND.MSLAMPH.multi-sensor.multi-platform.MERGED.2-0.r1", region="-80,-40,40,40", force_local=True)

# Step 2
ds_1 = cate.ops.open_dataset(ds_id="esacci.SEALEVEL.mon.IND.MSLAMPH.multi-sensor.multi-platform.MERGED.2-0.r1", region="-100,-60,10,10", force_local=True)```
  

### Specifications 

*cate 2.0.0. dev-20, Windows 10*