Fixed not updating dynamic background when doing continuous playing.

plugins/package-lock.json

@@ -7,7 +7,8 @@
       "name": "neptune-plugin-template",
       "dependencies": {
         "canvas-confetti": "^1.9.3",
-        "neptune-types": "^1.0.1"
+        "neptune-types": "^1.0.1",
+        "wanakana": "^5.3.1"
       },
       "devDependencies": {
         "esbuild": "^0.18.13"
@@ -527,6 +528,15 @@
         "oby": "^14.3.0"
       }
     },
+    "node_modules/wanakana": {
+      "version": "5.3.1",
+      "resolved": "https://registry.npmjs.org/wanakana/-/wanakana-5.3.1.tgz",
+      "integrity": "sha512-OSDqupzTlzl2LGyqTdhcXcl6ezMiFhcUwLBP8YKaBIbMYW1wAwDvupw2T9G9oVaKT9RmaSpyTXjxddFPUcFFIw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/zod": {
       "version": "3.24.2",
       "resolved": "https://registry.npmjs.org/zod/-/zod-3.24.2.tgz",