B7: stop AdminDashboard refetching the case list on selection change
selectedCaseId was both read and written inside the list-loading effect and
listed in its deps, causing a second fetch on first render and after every
filter reset. Auto-select now uses a functional state update, so the effect
no longer depends on selectedCaseId; editForm stays in sync via the existing
selectedCase effect.
root
3a0d2b0c2d