fix(cw): show the Kenwood/Elecraft keyer as connected when CAT is up

The keyer panel synthesised a "connected" status for the icom/flex/yaesu
rig engines but not kenwood, so the Kenwood/Elecraft engine fell back to the
(disconnected) WinKeyer hardware status and always showed "not connected"
even though its CAT link was up.

frontend/src/App.tsx

@@ -5703,11 +5703,11 @@ export default function App() {
                 // exactly when its CAT backend is. Yaesu was missing from this
                 // list, so the panel fell back to the WinKeyer status — which
                 // reported disconnected, no WinKeyer being attached.
-                status={cwSource === 'icom' || cwSource === 'flex' || cwSource === 'yaesu'
+                status={cwSource === 'icom' || cwSource === 'flex' || cwSource === 'yaesu' || cwSource === 'kenwood'
                   ? {
                     connected: catState.backend === cwSource && catState.connected,
                     busy: false, wpm: wkWpm, version: 0,
-                    port: cwSource === 'flex' ? 'CWX' : cwSource === 'yaesu' ? 'CAT' : 'CI-V',
+                    port: cwSource === 'flex' ? 'CWX' : cwSource === 'yaesu' || cwSource === 'kenwood' ? 'CAT' : 'CI-V',
                   }
                   : wkStatus}
                 ports={wkPorts}