Invalid locale / date causes fatal error

[khromov]

When specifying an invalid locale like locale: "test" the component crashes the whole page:

formatter.js:8 Uncaught (in promise) RangeError: Incorrect locale information provided
    at new RelativeTimeFormat (<anonymous>)
    at getFormatter (formatter.js:8:23)
    at register (state.js:10:23)
    at init2 (action.js:8:9)
    at relativeTime (action.js:10:5)
    at mount (Message.svelte:178:22)
    at targetCmp.$$.fragment.m (svelte-hooks.js?v=2364f85d:291:24)
    at mount_component (Component.js:44:23)
    at Object.mount [as m] (http://localhost:5173/src/routes/(app)/jar/+page.svelte:937:4)
    at Object.mount [as m] (http://localhost:5173/src/routes/(app)/jar/+page.svelte:691:21)

The same happens when an invalid date is specified.

Since Svelte has no support for error boundaries, it's very hard to catch these errors in component init. It would be better if this component handled it gracefully with try/catch (for example, printing a console.warn() about the issue) and not display anything if there was an error.