[FIX] chart: remove empty datasets for chart

[anhe-odoo]

Task Description

This task aims to undisplay empty datasets from a chart (when all the values are undefined, not when they are equals to 0). This has been done by ignoring the empty datasets during the runtime creation.

Related Task

• Task: 4085864

review checklist

• [ ] feature is organized in plugin, or UI components
• [ ] support of duplicate sheet (deep copy)
• [ ] in model/core: ranges are Range object, and can be adapted (adaptRanges)
• [ ] in model/UI: ranges are strings (to show the user)
• [ ] undo-able commands (uses this.history.update)
• [ ] multiuser-able commands (has inverse commands and transformations where needed)
• [ ] new/updated/removed commands are documented
• [ ] exportable in excel
• [ ] translations (_t("qmsdf %s", abc))
• [ ] unit tested
• [ ] clean commented code
• [ ] track breaking changes
• [ ] doc is rebuild (npm run doc)
• [ ] status is correct in Odoo

[robodoo]

[rrahir]

@anhe-odoo could you close it if we agree that it's outdated?

[anhe-odoo]

@rrahir I don't remember why we let this PR apart and restart from a fresh master-targeted PR (https://github.com/odoo/o-spreadsheet/pull/4842), but I suppose it was related to the "stable" policy as it's not really a bug but a change in behavior so, yes, we should close it.