fix: Standardize key shortcut for previous tab functionality

- Updated key shortcut from "Ctrl+Shift+Backtab" to "Ctrl+Shift+Tab" in settings.json and related files for consistency.
- Adjusted utility function to replace "Backtab" with "Tab" for uniformity in key representation.

This change enhances user experience by aligning key shortcuts across the application.

bug: https://pms.uniontech.com/bug-view-345247.html

Author: dengzhongyuan365-dev

src/common/utils.cpp

@@ -492,6 +492,10 @@ QString Utils::getKeyshortcut(QKeyEvent *keyEvent)
             qDebug() << "keys.value(i).contains(Return)";
             keys.replace(i, "Enter");
         }
+        // 与 Return→Enter 同理：统一为常见写法，和配置/显示 "Ctrl+Shift+Tab" 一致
+        if (keys.value(i) == "Backtab") {
+            keys.replace(i, "Tab");
+        }
     }
 
     qDebug() << "Exit getKeyshortcut, keys:" << keys.join("+");

src/resources/settings.json

@@ -123,7 +123,7 @@
                             "key": "selectprevtab",
                             "name": "Previous tab",
                             "type": "keySequenceEdit",
-                            "default":  "Ctrl+Shift+Backtab"
+                            "default":  "Ctrl+Shift+Tab"
                         },
                         {
                             "key": "closetab",
@@ -593,7 +593,7 @@
                             "key": "selectprevtab",
                             "hide" : true,
                             "reset" : false,
-                            "default":  "Ctrl+Shift+Backtab"
+                            "default":  "Ctrl+Shift+Tab"
                         },
                         {
                             "key": "closetab",
@@ -1087,7 +1087,7 @@
                             "key": "selectprevtab",
                             "hide" : true,
                             "reset" : false,
-                            "default":  "Ctrl+Shift+Backtab"
+                            "default":  "Ctrl+Shift+Tab"
                         },
                         {
                             "key": "closetab",
@@ -1581,7 +1581,7 @@
                             "key": "selectprevtab",
                             "hide" : true,
                             "reset" : false,
-                            "default":  "Ctrl+Shift+Backtab"
+                            "default":  "Ctrl+Shift+Tab"
                         },
                         {
                             "key": "closetab",

src/resources/settings.json.in

@@ -123,7 +123,7 @@
                             "key": "selectprevtab",
                             "name": "Previous tab",
                             "type": "keySequenceEdit",
-                            "default":  "Ctrl+Shift+Backtab"
+                            "default":  "Ctrl+Shift+Tab"
                         },
                         {
                             "key": "closetab",
@@ -593,7 +593,7 @@
                             "key": "selectprevtab",
                             "hide" : true,
                             "reset" : false,
-                            "default":  "Ctrl+Shift+Backtab"
+                            "default":  "Ctrl+Shift+Tab"
                         },
                         {
                             "key": "closetab",
@@ -1087,7 +1087,7 @@
                             "key": "selectprevtab",
                             "hide" : true,
                             "reset" : false,
-                            "default":  "Ctrl+Shift+Backtab"
+                            "default":  "Ctrl+Shift+Tab"
                         },
                         {
                             "key": "closetab",
@@ -1581,7 +1581,7 @@
                             "key": "selectprevtab",
                             "hide" : true,
                             "reset" : false,
-                            "default":  "Ctrl+Shift+Backtab"
+                            "default":  "Ctrl+Shift+Tab"
                         },
                         {
                             "key": "closetab",