Update locale files for English, Traditional Chinese, and Simplified Chinese to include new confirmation prompts for enabling audio effects; refactor EffectsPage and EQPage to integrate FeatureGate for managing effect states and user interactions.

client/src/locales/data-zh-HK.json

@@ -92,7 +92,11 @@
           { "label": "立體聲", "index": 1 }
         ]
       }
-    }
+    },
+    "enableConfirmTitle": "音效未開啟",
+    "enableConfirmDesc": "目前 Effect 功能已關閉，是否開啟？",
+    "enableConfirmOk": "開啟",
+    "enableConfirmCancel": "取消"
   },
   "peq": {
     "Standard": "標準等化器預設",
@@ -226,7 +230,10 @@
       "toastApplyBSuccess": "已將 B 曲線套用到 A",
       "toastApplyBFail": "套用 B 失敗",
       "toastSaveBOk": "已另存 B 預設",
-      "toastSaveBFail": "另存 B 失敗"
+      "toastSaveBFail": "另存 B 失敗",
+      "enableConfirmTitle": "HP-EQ 未開啟",
+      "enableConfirmDesc": "目前 HP-EQ 功能已關閉，是否開啟？",
+      "enableConfirmOk": "開啟"
     }
   },
   "dac": {