Create buttons for vertical drops in construction window #2567

Job	Run time
Check code formatting	43s
Check changelog formatting	8s
Get version info	23s
g2.dat	11s
Windows (win32) using mingw	8m 37s
Ubuntu Linux (noble, x86_64, portable)	9m 55s
Debian Linux (bookworm, x86_64, portable)	9m 44s
Ubuntu Linux (AppImage, x86_64)	8m 16s
Ubuntu Linux (debug) using clang, coverage enabled	12m 51s
Ubuntu Linux (noble, debug, [http, network, flac, vorbis OpenGL] disabled) using clang	8m 33s
Ubuntu Linux (Docker)	1s
macOS (x64) using CMake	4m 49s
Android	23m 17s
macOS (arm64) using CMake	5m 38s
Emscripten	15m 58s
Windows (win32)	8m 34s
Windows (x64)	9m 32s
Windows (arm64)	9m 46s
macOS universal app bundle	30s
Release	15s
	2h 17m 41s

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