"Apply to sub-policies" toggle in the policy scores table does nothing

[ThisIsMissEm]

What happened

In the User Strikes → Policy Scores tab, the "Apply to sub-policies" toggle in the
child-policies table does nothing. Toggling it does not update
applyUserStrikeCountConfigToChildren, so the setting is silently discarded and never
reaches the save mutation.

The same control in the card/tree layout above the table works correctly.

Cause: the table's cell renderer passes onChange to <Switch>, but Switch wraps
@radix-ui/react-switch, whose Root renders a <button role="switch">. Buttons do not
fire change events, so the handler is never invoked. Radix's API for this is
onCheckedChange.

client/src/webpages/dashboard/userStrikes/PolicyScoresTab.tsx, in ChildPoliciesTable:

<Switch
  disabled={editingDisabled}
  onChange={(event) => {
    const { checked } = event.target as HTMLInputElement;
    // …never runs
  }}
/>

Compare the working instance in PolicyScoresTab's renderPolicy, ~215 lines earlier in
the same file:

<Switch
  disabled={!editingPolicies.includes(policy.value.id)}
  defaultChecked={policy.value.applyUserStrikeCountConfigToChildren}
  onCheckedChange={(checked) => { /* … */ }}
/>

Expected

Toggling "Apply to sub-policies" in the table updates the policy's
applyUserStrikeCountConfigToChildren value and persists on save, matching the behaviour
of the equivalent control in the card layout.

Fix

Two changes in ChildPoliciesTable's cell renderer:

1. onChange → onCheckedChange={(checked) => …}, dropping the event.target cast.
2. Add the missing checked / defaultChecked prop — the table's switch is currently
   uncontrolled and does not reflect the stored value either.

StrikeEnabledActionsTab.tsx is a good reference for the intended shape; every other
Switch in client/ already uses onCheckedChange.

Version/commit

6037e3f0

Affected browser(s)

All — not browser-specific.

Relevant logs/errors

No runtime error; the handler simply never fires. It surfaces as a type error under
TypeScript 6, which rejects the EventTarget & HTMLButtonElement → HTMLInputElement
cast that was concealing the mismatch:

src/webpages/dashboard/userStrikes/PolicyScoresTab.tsx(514,37): error TS2352:
Conversion of type 'EventTarget & HTMLButtonElement' to type 'HTMLInputElement' may be a
mistake because neither type sufficiently overlaps with the other. If this was
intentional, convert the expression to 'unknown' first.

Anything else

Found while bumping client/ to TypeScript 6.0.3. That PR keeps the diff mechanical and
silences the cast via unknown with a TODO pointing here, rather than changing
behaviour — hence this separate issue.

A regression test belongs with the fix; client/src/coop-ui/Switch.test.tsx already
covers the primitive, so the gap is at the ChildPoliciesTable level.

[TayfurYldz]

I can take this. I’ll reproduce it on current main, add a regression test at the ChildPoliciesTable level, and keep the fix scoped to the switch state/handler behavior.