[FIX] data_validation: prevent icon overlap

[hokolomopo]

Description:

A same cell could have a data validation icon and a filter icon at
the same time, possibly causing overlap.

This commit disable the data validation icons on cells that have a
filter icon.

Note: for future work (in master), it'd be nice if we could create
a generic way to display a grid icon that would ensure that there is
no two icons on the same cell, and not handle them on a case by case
basis.

Task: : 3684182

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]

Pull request status dashboard.

[pro-odoo]

robodoo rebase-ff r+

[robodoo]

Merge method set to rebase and fast-forward.