feat(i18n): update bulk action labels to reflect selected items

Change bulk action labels from "All" to "Selected" in both English and Chinese locales to accurately reflect that these actions apply only to selected items rather than all items. This improves user interface clarity and prevents potential confusion about the scope of bulk operations.

locales/en.json

@@ -412,14 +412,14 @@
             "selected": "{count} selected",
             "selectedSuffix": "selected",
             "viewSelected": "View Selected",
-            "addTags": "Add Tags to All",
-            "setBaseModel": "Set Base Model for All",
-            "setContentRating": "Set Content Rating for All",
-            "copyAll": "Copy All Syntax",
-            "refreshAll": "Refresh All Metadata",
-            "moveAll": "Move All to Folder",
+            "addTags": "Add Tags to Selected",
+            "setBaseModel": "Set Base Model for Selected",
+            "setContentRating": "Set Content Rating for Selected",
+            "copyAll": "Copy Selected Syntax",
+            "refreshAll": "Refresh Selected Metadata",
+            "moveAll": "Move Selected to Folder",
             "autoOrganize": "Auto-Organize Selected",
-            "deleteAll": "Delete All Models",
+            "deleteAll": "Delete Selected Models",
             "clear": "Clear Selection",
             "autoOrganizeProgress": {
                 "initializing": "Initializing auto-organize...",

locales/zh-CN.json

@@ -412,14 +412,14 @@
             "selected": "已选中 {count} 项",
             "selectedSuffix": "已选中",
             "viewSelected": "查看已选中",
-            "addTags": "为所有添加标签",
-            "setBaseModel": "为所有设置基础模型",
-            "setContentRating": "为全部设置内容评级",
-            "copyAll": "复制全部语法",
-            "refreshAll": "刷新全部元数据",
-            "moveAll": "全部移动到文件夹",
+            "addTags": "为所选中添加标签",
+            "setBaseModel": "为所选中设置基础模型",
+            "setContentRating": "为所选中设置内容评级",
+            "copyAll": "复制所选中语法",
+            "refreshAll": "刷新所选中元数据",
+            "moveAll": "移动所选中到文件夹",
             "autoOrganize": "自动整理所选模型",
-            "deleteAll": "删除所有模型",
+            "deleteAll": "删除选中模型",
             "clear": "清除选择",
             "autoOrganizeProgress": {
                 "initializing": "正在初始化自动整理...",