[BUG - @vue/compat] Incorrect deprecation warning message for `COMPILER_V_BIND_SYNC`

[FeBe95]

Vue version

3.5.13

Link to minimal reproduction

https://stackblitz.com/edit/vitejs-vite-ah91yjjh?file=src%2FApp.vue,vite.config.js&terminal=dev

Steps to reproduce

1. Install & set up @vue/compat
2. Use :foo.sync="bar" in a template
3. Look at confusing deprecation warning

What is expected?

[Vue warn] (deprecation COMPILER_V_BIND_SYNC) .sync modifier for v-bind has been removed.
    ↳ Use v-model with argument instead.
    ↳ `v-bind::foo.sync` should be changed to `v-model::foo`.

What is actually happening?

[Vue warn] (deprecation COMPILER_V_BIND_SYNC) .sync modifier for v-bind has been removed.
    ↳ Use v-model with argument instead.
    ↳ `v-bind::foo.sync.sync` should be changed to `v-model::foo.sync`.

System Info

Any additional comments?

No response