Internals: rename recently added TreeNodeIsOpen() -> TreeNodeGetOpen(). (#7553, #1131, #2958, #2079, #722)

Amend ac7d6fb

imgui_internal.h

diff --git a/imgui_internal.h b/imgui_internal.h
index 4523a02..5d8f233 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -3466,7 +3466,7 @@
     // Widgets: Tree Nodes
     IMGUI_API bool          TreeNodeBehavior(ImGuiID id, ImGuiID storage_id, ImGuiTreeNodeFlags flags, const char* label, const char* label_end = NULL);
     IMGUI_API void          TreePushOverrideID(ImGuiID id);
-    IMGUI_API bool          TreeNodeIsOpen(ImGuiID storage_id);
+    IMGUI_API bool          TreeNodeGetOpen(ImGuiID storage_id);
     IMGUI_API void          TreeNodeSetOpen(ImGuiID storage_id, bool open);
     IMGUI_API bool          TreeNodeUpdateNextOpen(ImGuiID storage_id, ImGuiTreeNodeFlags flags);   // Return open state. Consume previous SetNextItemOpen() data, if any. May return true when logging.
 

imgui_widgets.cpp

diff --git a/imgui_widgets.cpp b/imgui_widgets.cpp
index 6e0b5d9..a7ab721 100644
--- a/imgui_widgets.cpp
+++ b/imgui_widgets.cpp
@@ -6260,7 +6260,7 @@
     return TreeNodeBehavior(id, id, flags, label, label_end);
 }
 
-bool ImGui::TreeNodeIsOpen(ImGuiID storage_id)
+bool ImGui::TreeNodeGetOpen(ImGuiID storage_id)
 {
     ImGuiContext& g = *GImGui;
     ImGuiStorage* storage = g.CurrentWindow->DC.StateStorage;