Describe the bug
hasContext is not exported from src/runtime/index.ts.

Logs
N/A

To Reproduce
Attempt to import { hasContext } from 'svelte';.

REPL

Expected behavior
I should be able to import the newly added hasContext lifecycle function.

Stacktraces
N/A

Information about your Svelte project:
N/A

Severity
Mild annoyance.

Additional context
This feature is brand new, so the export was likely just overlooked.