Setting marker end time with clock button uses full precision

This is similar to how start time setting already worked.

ui/v2.5/src/components/Scenes/SceneDetails/SceneMarkerForm.tsx

@@ -234,7 +234,7 @@ export const SceneMarkerForm: React.FC<ISceneMarkerForm> = ({
           onReset={() =>
             formik.setFieldValue(
               "end_seconds",
-              Math.round(getPlayerPosition() ?? 0)
+              getPlayerPosition() ?? 0
             )
           }
           error={error}