Chart selection persists and is not editable in the admin

Parent notion issue: https://www.notion.so/owid/Selection-leaks-out-to-URL-f483bf775fe44f86a00cd6383a169082

Description

In some charts, there is a selected entity that persists and cannot be edited out in the admin.

Expected behaviour

All selection should be managed through the admin only.

Examples

The chart indoor-pollution-death-rates-clean-fuels is constantly redirected from https://ourworldindata.org/grapher/indoor-pollution-death-rates-clean-fuels to https://ourworldindata.org/grapher/indoor-pollution-death-rates-clean-fuels?country=~SLB (Solmon Islands selected).

The selection persists after being removed in the admin.

In the chart config, Solomon Islands was in the selectedEntityNames field.

Analysis

There are three ways of specifying selection in the Grapher config:

• selectedData
• selectedEntityIds
• selectedEntityNames

Ideally we would migrate to only using one. The least likely to go wrong is selectedEntityIds.

[larsyencken]

Closing this and tracking it in #1245 instead.

[marcelgerber]

As mentioned in #1241 this is also affecting color selection: If a color is specified in the legacy selectedData, then we cannot reset to the color scheme default (we can override it, however).