style(ui): adjust font and icon size for keyboard layout

Use DTK font manager instead of hardcoded point size, and adjust
delete button icon size to better fit the UI design.

使用DTK字体管理器替代硬编码字体大小，并调整删除按钮图标尺寸以更好地适配UI设计。

Log: 调整键盘布局字体和图标大小
PMS: BUG-353825
Influence: 优化键盘布局界面的字体和图标显示效果，提升用户体验。

Author: add-uos

src/dcc-fcitx5configtool/qml/KeyboardLayout.qml

@@ -30,7 +30,7 @@ DccObject {
                 Layout.alignment: Qt.AlignRight | Qt.AlignVCenter
                 Layout.rightMargin: 10
                 text: keyboardLayoutTitle.isEditing ? qsTr("done") : qsTr("edit")
-                font.pointSize: 12
+                font: D.DTK.fontManager.t8
                 background: null
                 textColor: D.Palette {
                     normal {
@@ -100,10 +100,10 @@ DccObject {
                         id: removeButton
                         visible: itemDelegate.isCurrentLang || keyboardLayoutTitle.isEditing
                         icon.name: itemDelegate.isCurrentLang ? "item_checked" : "list_delete"
-                        icon.width: 24
-                        icon.height: 24
-                        implicitWidth: 36
-                        implicitHeight: 36
+                        icon.width: 16
+                        icon.height: 16
+                        implicitWidth: 16
+                        implicitHeight: 16
                         anchors {
                             right: itemDelegate.right
                             rightMargin: 10

src/dcc-fcitx5configtool/qml/KeyboardLayoutModule.qml

@@ -30,7 +30,7 @@ DccObject {
                 Layout.alignment: Qt.AlignRight | Qt.AlignVCenter
                 Layout.rightMargin: 10
                 text: keyboardLayoutTitle.isEditing ? qsTr("done") : qsTr("edit")
-                font.pointSize: 12
+                font: D.DTK.fontManager.t8
                 background: null
                 textColor: D.Palette {
                     normal {
@@ -99,10 +99,10 @@ DccObject {
                         id: removeButton
                         visible: itemDelegate.isCurrentLang || keyboardLayoutTitle.isEditing
                         icon.name: itemDelegate.isCurrentLang ? "item_checked" : "list_delete"
-                        icon.width: 24
-                        icon.height: 24
-                        implicitWidth: 36
-                        implicitHeight: 36
+                        icon.width: 16
+                        icon.height: 16
+                        implicitWidth: 16
+                        implicitHeight: 16
                         anchors {
                             right: itemDelegate.right
                             rightMargin: 10