Italicize room name in leave/forget poups

Like for the invite popup now

src/qml/Popups/ForgetRoomPopup.qml

@@ -2,7 +2,8 @@ import QtQuick 2.12
 
 BoxPopup {
     id: popup
-    summary.text: qsTr("Leave %1 and discard the history?").arg(roomName)
+    summary.text: qsTr("Leave <i>%1</i> and lose the history?").arg(roomName)
+    summary.textFormat: Text.StyledText
     details.text: qsTr(
         "You will not be able to see the messages you received in " +
         "this room anymore.\n\n" +

src/qml/Popups/LeaveRoomPopup.qml

@@ -1,7 +1,8 @@
 import QtQuick 2.12
 
 BoxPopup {
-    summary.text: qsTr("Leave %1?").arg(roomName)
+    summary.text: qsTr("Leave <i>%1</i>?").arg(roomName)
+    summary.textFormat: Text.StyledText
     details.text: qsTr(
         "If this room is private, you will not be able to rejoin it."
     )