Examples: reorder builds items to favor main.cpp and backend failing earlier.

examples/example_glfw_wgpu/Makefile.emscripten

diff --git a/examples/example_glfw_wgpu/Makefile.emscripten b/examples/example_glfw_wgpu/Makefile.emscripten
index 6af61e7..ff386fe 100644
--- a/examples/example_glfw_wgpu/Makefile.emscripten
+++ b/examples/example_glfw_wgpu/Makefile.emscripten
@@ -19,8 +19,8 @@
 EXE = $(WEB_DIR)/index.html
 IMGUI_DIR = ../..
 SOURCES = main.cpp
-SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp
 SOURCES += $(IMGUI_DIR)/backends/imgui_impl_glfw.cpp $(IMGUI_DIR)/backends/imgui_impl_wgpu.cpp
+SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 CPPFLAGS =

examples/example_sdl2_wgpu/Makefile.emscripten

diff --git a/examples/example_sdl2_wgpu/Makefile.emscripten b/examples/example_sdl2_wgpu/Makefile.emscripten
index 9c5533c..ebc7f97 100644
--- a/examples/example_sdl2_wgpu/Makefile.emscripten
+++ b/examples/example_sdl2_wgpu/Makefile.emscripten
@@ -19,8 +19,8 @@
 EXE = $(WEB_DIR)/index.html
 IMGUI_DIR = ../..
 SOURCES = main.cpp
-SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp
 SOURCES += $(IMGUI_DIR)/backends/imgui_impl_sdl2.cpp $(IMGUI_DIR)/backends/imgui_impl_wgpu.cpp
+SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 CPPFLAGS =

examples/example_sdl3_wgpu/Makefile.emscripten

diff --git a/examples/example_sdl3_wgpu/Makefile.emscripten b/examples/example_sdl3_wgpu/Makefile.emscripten
index ee2ef8c..c84acc7 100644
--- a/examples/example_sdl3_wgpu/Makefile.emscripten
+++ b/examples/example_sdl3_wgpu/Makefile.emscripten
@@ -19,8 +19,8 @@
 EXE = $(WEB_DIR)/index.html
 IMGUI_DIR = ../..
 SOURCES = main.cpp
-SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp
 SOURCES += $(IMGUI_DIR)/backends/imgui_impl_sdl3.cpp $(IMGUI_DIR)/backends/imgui_impl_wgpu.cpp
+SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 CPPFLAGS =