87581cd266
Note: this change will break non-deep `watch` on the `v-model` bound array since the array is no longer replaced. This can be considered part of the Array watch changes in v3 as detailed at https://v3.vuejs.org/guide/migration/watch.html This is unfortunate but unavoidable since the issue that it fixes is more important: `v-model` should definitely work with a non-ref reactive array. fix #2662