Fix issue with chat button / DevMenu button becoming focusable

This made gameplay a bit difficult when these buttons were enabled.

Common/UI/Root.cpp

@@ -124,6 +124,8 @@ void EnableFocusMovement(bool enable) {
 		focusMoves.clear();
 		heldKeys.clear();
 		focusedView = nullptr;
+	} else {
+		enable = enable;
 	}
 }
 
@@ -361,7 +363,7 @@ restart:
 	}
 }
 
-DialogResult UpdateViewHierarchy(ViewGroup *root) {
+DialogResult UpdateViewHierarchy(ViewGroup *root, bool canEnableFocusMovement) {
 	ProcessHeldKeys(root);
 	frameCount++;
 
@@ -370,7 +372,7 @@ DialogResult UpdateViewHierarchy(ViewGroup *root) {
 		return DR_NONE;
 	}
 
-	if (focusMoves.size()) {
+	if (focusMoves.size() && canEnableFocusMovement) {
 		EnableFocusMovement(true);
 		if (!GetFocusedView()) {
 			// Find a view to focus.
@@ -397,8 +399,8 @@ DialogResult UpdateViewHierarchy(ViewGroup *root) {
 				}
 			}
 		}
-		focusMoves.clear();
 	}
+	focusMoves.clear();
 
 	root->Update();
 	return DispatchEvents();

Common/UI/Root.h

@@ -26,7 +26,7 @@ DialogResult DispatchEvents();
 class ViewGroup;
 
 void LayoutViewHierarchy(const UIContext &dc, const UI::Margins &rootMargins, UI::ViewGroup *root, ViewLayoutMode layoutMode, bool immersiveMode);
-DialogResult UpdateViewHierarchy(ViewGroup *root);
+DialogResult UpdateViewHierarchy(ViewGroup *root, bool canEnableFocusMovement = true);
 
 enum class KeyEventResult {
 	IGNORE_KEY,  // Don't let it be processed.

Common/UI/UIScreen.cpp

@@ -104,7 +104,7 @@ void UIScreen::update() {
 	DoRecreateViews();
 
 	if (root_) {
-		DialogResult result = UpdateViewHierarchy(root_);
+		DialogResult result = UpdateViewHierarchy(root_, AllowFocusMovement());
 		if (result != DR_NONE) {
 			TriggerFinish(result);
 		}

Common/UI/UIScreen.h

@@ -50,6 +50,7 @@ public:
 
 protected:
 	virtual void CreateViews() = 0;
+	virtual bool AllowFocusMovement() const { return true; }
 
 	Bounds GetLayoutBounds(UIContext &dc) const;