Install wx/osx/appprogress as part of "make install"

Add the file to the files list, this should have been part of
11a5b83e2c (see #16638).

Closes #18059.

Makefile.in

@@ -3299,6 +3299,7 @@ COND_TOOLKIT_OSX_COCOA_GUI_HDR =  \
 	wx/generic/listctrl.h \
 	wx/generic/prntdlgg.h \
 	wx/generic/statusbr.h \
+	wx/osx/appprogress.h \
 	wx/osx/cocoa/chkconf.h \
 	wx/osx/cocoa/evtloop.h \
 	wx/osx/cocoa/private.h \
@@ -3395,6 +3396,7 @@ COND_TOOLKIT_OSX_IPHONE_GUI_HDR =  \
 	wx/generic/listctrl.h \
 	wx/generic/prntdlgg.h \
 	wx/generic/statusbr.h \
+	wx/osx/appprogress.h \
 	wx/osx/iphone/chkconf.h \
 	wx/osx/iphone/evtloop.h \
 	wx/osx/iphone/private.h \

build/bakefiles/files.bkl

@@ -2417,6 +2417,7 @@ IMPORTANT: please read docs/tech/tn0016.txt before modifying this file!
     wx/generic/listctrl.h
     wx/generic/prntdlgg.h
     wx/generic/statusbr.h
+    wx/osx/appprogress.h
 </set>
 
 <!-- ====================================================================== -->

build/cmake/files.cmake

@@ -2280,6 +2280,7 @@ set(OSX_SHARED_HDR
     wx/generic/listctrl.h
     wx/generic/prntdlgg.h
     wx/generic/statusbr.h
+    wx/osx/appprogress.h
 )
 
 set(OSX_COCOA_SRC

build/files

@@ -2174,6 +2174,7 @@ OSX_SHARED_HDR =
     wx/osx/accel.h
     wx/osx/anybutton.h
     wx/osx/app.h
+    wx/osx/appprogress.h
     wx/osx/bitmap.h
     wx/osx/bmpbuttn.h
     wx/osx/brush.h