Switch to typescript 5.8.3 (#9152)

Signed-off-by: Andrey Sobolev <haiodo@gmail.com>

plugins/document-resources/package.json

@@ -29,7 +29,7 @@
     "eslint": "^8.54.0",
     "prettier": "^3.1.0",
     "svelte-check": "^3.6.9",
-    "typescript": "^5.3.3",
+    "typescript": "^5.8.3",
     "jest": "^29.7.0",
     "ts-jest": "^29.1.1",
     "@types/jest": "^29.5.5",

plugins/document-resources/src/components/navigator/DocHierarchy.svelte

@@ -88,7 +88,7 @@
     dispatch('selected', obj)
   }
 
-  $: _documents = documents.map((it) => documentById.get(it)).filter((it) => it !== undefined) as Document[]
+  $: _documents = documents.map((it) => documentById.get(it)).filter((it) => it !== undefined)
   $: _descendants = new Map(_documents.map((it) => [it._id, getDescendants(it._id)]))
 </script>