fix(files): use replacer function to prevent $ special-char corruption in markdown URL rewrite

Author: waleedlatif1

apps/sim/app/api/files/export/[id]/route.ts

@@ -124,9 +124,10 @@ export const GET = withRouteHandler(
 
     for (const [imageId, asset] of assetMap) {
       const escapedId = imageId.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
+      const replacement = `./assets/${asset.filename}`
       mdContent = mdContent.replace(
         new RegExp(`/api/files/view/${escapedId}`, 'g'),
-        `./assets/${asset.filename}`
+        () => replacement
       )
     }