renamed AccountSwitchPopupWidget -> AccountSwitchPopup

This has been triggering me forever

src/widgets/AccountSwitchPopup.hpp

@@ -0,0 +1,28 @@
+#pragma once
+
+#include "widgets/AccountSwitchWidget.hpp"
+
+#include <QWidget>
+
+namespace chatterino {
+
+class AccountSwitchPopup : public QWidget
+{
+    Q_OBJECT
+
+public:
+    AccountSwitchPopup(QWidget *parent = nullptr);
+
+    void refresh();
+
+protected:
+    void focusOutEvent(QFocusEvent *event) final;
+    void paintEvent(QPaintEvent *event) override;
+
+private:
+    struct {
+        AccountSwitchWidget *accountSwitchWidget = nullptr;
+    } ui_;
+};
+
+}  // namespace chatterino