[Feature] Improve rendering one-week subset of days in calendar

### What problem does this feature solve?

Allowing a one-week calendar to render only a subset of days improves UX when rendering the graph in devices with small screens. The proposal is to support these scenarios without showing blank day columns:

### Initial segment of a week

### Middle segment of a week

### Single-day view
In mobile interfaces, this feature could allow users to choose between displaying five days, three days, or just one day (rendering multiple charts per day as needed).


### What does the proposed API look like?

The API will stay as it is, the fix will focus on styling and not rendering extra nodes.