fix: remove as const from svgSanitizeOptions to fix DOMPurify type compat

.cursor/goal/scratchpad.md

@@ -1,5 +1,5 @@
 ---
-iteration: 1
+iteration: 2
 max_iterations: 30
 status: active
 goal: "Review, fix, benchmark, and verify every package in Phase 1 performance branch until perfect"

apps/nextjs/src/app/api/user-medias/svg-purify.ts

@@ -4,7 +4,7 @@ import { parseHTML } from "linkedom";
 const svgSanitizeOptions = {
   USE_PROFILES: { svg: true, svgFilters: true },
   FORBID_TAGS: ["style"],
-} as const;
+};
 
 const LINKEDOM_NODE_PROPS = [
   "ownerDocument",