test_app_server: fix build

Change-Id: I4489359980f92accdb825446f697cdbc7ce8121e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6050
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

src/tests/servers/app/Jamfile

@@ -109,12 +109,14 @@ local decorator_src =
 	;
 
 local font_src =
+	AppFontManager.cpp
 	FontCache.cpp
 	FontCacheEntry.cpp
 	FontEngine.cpp
 	FontFamily.cpp
 	FontManager.cpp
 	FontStyle.cpp
+	GlobalFontManager.cpp
 	;
 
 # These files are shared between the test_app_server and the libhwintreface, so