chore(playground): bump catch-all chunk size limit 5000 => 5300 (#564)

bb.js wasm chunks on merge-train/barretenberg grew to 5079/5117 KB,
failing the playground build.

Co-authored-by: ludamad <adamdomurad@gmail.com>

Author: ludamad

playground/vite.config.ts

@@ -161,9 +161,11 @@ export default defineConfig(({ mode }) => {
         // - 2026-06-18: bumped from 4600 => 4700 after rebuilding the bb.js browser package at its new
         //   barretenberg/ts/bb.js path produced assets/barretenberg-*.js at 4641.65 KB.
         // - 2026-07-02: bumped to 5000 after merging from public to private repo resulted in 4800+k for some reason.
+        // - 2026-07-04: bumped from 5000 => 5300 after bb changes on merge-train/barretenberg grew
+        //   assets/barretenberg-*.js to 5079.12 KB and assets/barretenberg-threads-*.js to 5116.65 KB.
         {
           pattern: /.*/,
-          maxSizeKB: 5000,
+          maxSizeKB: 5300,
           description: 'Detect if json artifacts or bb.js wasm get out of control',
         },
       ]),