Fixes#9873. The relationship filter in the "where" builder renders
stale values when switching between fields or adding additional "and"
conditions. This was because the `RelationshipFilter` component was not
responding to changes in the `relationTo` prop and failing to reset
internal state when these events took place.
While it sounds like a simple fix, it was actually quite extensive. The
`RelationshipFilter` component was previously relying on a `useEffect`
that had a callback in its dependencies. This was causing the effect to
run uncontrollably using old references. To avoid this, we use the new
`useEffectEvent` approach which allows the underlying effect to run much
more precisely. Same with the `Condition` component that wraps it. We
now run callbacks directly within event handlers as much as possible,
and rely on `useEffectEvent` _only_ for debounced value changes.
This component was also unnecessarily complex...and still is to some
degree. Previously, it was maintaining two separate refs, one to track
the relationships that have yet to fully load, and another to track the
next pages of each relationship that need to load on the next run. These
have been combined into a single ref that tracks both simultaneously, as
this data is interrelated.
This change also does some much needed housekeeping to the
`WhereBuilder` by improving types, defaulting the operator field, etc.
Related: #11023 and #11032
Unrelated: finds a few more instances where the new `addListFilter`
helper from #11026 could be used. Also removes a few duplicative tests.
da6511eba9