Labels disappear after chart update

### Current behaviour
If only active points labels are displayed (`display: (context) => context.active`) and `chart.update()` triggered while some labels are displayed, these labels disappear until another point become active.

### Expected behaviour
`chart.update()` don't breaks active points label visibility.

### Steps to Reproduce
1. Open example (https://codesandbox.io/s/plugin-example-forked-7ntsoq?file=/src/App.vue)
2. Hover on any point
3. Wait until `chart.update()` trigger (5 sec)
4. Labels disappear and appear again only after another point hovered

### Environment
chart.js: 4.1.1
chartjs-plugin-datalabels: 2.2.0

Start with the linked CodeSandbox reproduction using Chart.js 4.1.1 and chartjs-plugin-datalabels 2.2.0. Trace the update triggered after five seconds while a point is hovered, then verify that labels controlled by the active-point display condition remain visible after chart.update().

Written by the indexing model from the issue text.