Backends: OpenGL3: Fix OpenGL ES2 includes on Apple systems.

# Conflicts:
#	backends/imgui_impl_opengl3.cpp
#	docs/CHANGELOG.txt

backends/imgui_impl_opengl3.cpp

@@ -108,7 +108,11 @@
 
 // GL includes
 #if defined(IMGUI_IMPL_OPENGL_ES2)
-#include <GLES2/gl2.h>
+#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV))
+#include <OpenGLES/ES2/gl.h>    // Use GL ES 2
+#else
+#include <GLES2/gl2.h>          // Use GL ES 2
+#endif
 #if defined(__EMSCRIPTEN__)
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES

docs/CHANGELOG.txt

@@ -158,6 +158,7 @@ Other Changes:
 - Backends: Android, GLUT: Submit mouse data using io.AddMousePosEvent(), AddMouseButtonEvent(), AddMouseWheelEvent() functions. (#4858)
 - Backends: OpenGL3: Fixed a buffer overflow in imgui_impl_opengl3_loader.h init (added in 1.86). (#4468, #4830) [@dymk]
   It would generally not have noticeable side-effect at runtime but would be detected by runtime checkers.
+- Backends: OpenGL3: Fix OpenGL ES2 includes on Apple systems. [@rokups]
 - Backends: Metal: Added Apple Metal C++ API support. (#4824, #4746) [@luigifcruz]
   Enable with '#define IMGUI_IMPL_METAL_CPP' in your imconfig.h file.
 - Backends: Metal: Ignore ImDrawCmd where ElemCount == 0, which are normally not emitted by the library but