fix(cctv): show a camera facing 359.6° as HDG 0°, not HDG 360°

The CCTV HUD heading token and the camera panel's meta line rounded the
bearing without wrapping, so a camera facing 359.5° or more (a feed
bearing, or a heading calibrated just west of north) read "HDG 360°".
Both now wrap after rounding: 359.6° reads "HDG 0°", 359.4° "HDG 359°".

src/layers/cctv/headingConfidence.js

@@ -44,7 +44,8 @@ export function isHeadingEstimated(camera) {
  * @returns {string}
  */
 export function headingHudToken(camera) {
-  const hdg = Math.round(Number(camera?.headingDeg) || 0);
+  // 359.5° and above rounds to north; modulo keeps it from printing 360°.
+  const hdg = Math.round(Number(camera?.headingDeg) || 0) % 360;
   return isHeadingEstimated(camera)
     ? t('HDG {value}° (ESTIMATED)', { value: hdg })
     : t('HDG {value}°', { value: hdg });