effects/windowview: Add ExposeClassCurrentDesktop shortcut to KCM

See also: f2defd1d


(cherry picked from commit e45cc7a8)

src/effects/windowview/kcm/windowvieweffectkcm.cpp

 /*
     SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
+    SPDX-FileCopyrightText: 2022 ivan tkachenko <me@ratijas.tk>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
@@ -57,6 +58,12 @@ WindowViewEffectConfig::WindowViewEffectConfig(QWidget *parent, const QVariantLi
     KGlobalAccel::self()->setDefaultShortcut(toggleAction, {defaultToggleShortcutClass});
     KGlobalAccel::self()->setShortcut(toggleAction, {defaultToggleShortcutClass});
 
+    toggleAction = actionCollection->addAction(QStringLiteral("ExposeClassCurrentDesktop"));
+    toggleAction->setText(i18n("Toggle Present Windows (Window class on current desktop)"));
+    toggleAction->setProperty("isConfigurationAction", true);
+    KGlobalAccel::self()->setDefaultShortcut(toggleAction, QList<QKeySequence>()); // no default shortcut
+    KGlobalAccel::self()->setShortcut(toggleAction, QList<QKeySequence>());
+
     ui.shortcutsEditor->addCollection(actionCollection);
     connect(ui.shortcutsEditor, &KShortcutsEditor::keyChange, this, &WindowViewEffectConfig::markAsChanged);
 }