[poll-view] Added hiding of add-option overlay on message field focus.

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -4331,6 +4331,12 @@ void HistoryInner::elementSubmitAddPollOption(FullMsgId context) {
 	}
 }
 
+void HistoryInner::hideElementOverlay() {
+	if (_overlayHost) {
+		_overlayHost->hide();
+	}
+}
+
 void HistoryInner::elementOpenPhoto(
 		not_null<PhotoData*> photo,
 		FullMsgId context) {

Telegram/SourceFiles/history/history_inner_widget.h

@@ -162,6 +162,7 @@ public:
 		FullMsgId context,
 		QRect optionRect);
 	void elementSubmitAddPollOption(FullMsgId context);
+	void hideElementOverlay();
 	void elementOpenPhoto(
 		not_null<PhotoData*> photo,
 		FullMsgId context);

Telegram/SourceFiles/history/history_widget.cpp

@@ -6515,6 +6515,7 @@ void HistoryWidget::fieldResized() {
 void HistoryWidget::fieldFocused() {
 	if (_list) {
 		_list->clearSelected(true);
+		_list->hideElementOverlay();
 	}
 }