[Maps] Show indication in LayerTOC that apply-global-filter is turned off

[thomasneirynck]

The layer TOC should indicate that global filters are not being applied when there are global filters specified for that index-pattern.

The mechanism could be similar to how the TOC shows an info-tooltip when the layer is showing incomplete query-results (#40805)

[elasticmachine]

Pinging @elastic/kibana-gis

[nreese]

@thomasneirynck

What about layers that do not fetch data from Elasticsearch sources and are never affected by the global filter bar and query context?

I think only showing an icon next to layers with disabled global filters ES sources will not signal to users that non-ES layers are also not effected by the global query context.

What about doing the inverse and putting the eui fitler icon next to any layer that is effected by the global query context?