fix: broken import due to missing file extension

Author: josdejong

src/lib/logic/documentState.ts

@@ -44,7 +44,7 @@ import type {
   Section,
   VisibleSection
 } from '$lib/types'
-import { SelectionType } from '$lib/types'
+import { SelectionType } from '$lib/types.js'
 import { CaretType } from '$lib/types.js'
 import { int } from '../utils/numberUtils.js'
 import { isLargeContent } from '$lib/utils/jsonUtils.js'