[BUGFIX beta] Ensure substates properly work with resetNamespace #14054
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This fixes two apparent issues with substates. The first was discovered when enabling substates for the
mount
keyword, but while fixing that a second seems to have been uncovered.When looking up substates, the
findChildRouteName
method was always applying the parent route's namespace, even if the current route hadresetNamespace
applied. Some of the tests even seemed to be explicitly working around this issue (such as here and here), so maybe this was intended, but per the discussion in the other thread, it seems like no one currently expects it.Additionally,
_loading
substates were havingresetNamespace
applied, but_error
ones were not. This leads to inconsistent and unintuitive behavior. Again, maybe intended, but seems wrong.