gh-123961: Clean up curses C API/capsule (#124907) #7

Job	Run time
Interpreter (Debug)	6m 53s
Free-Threaded (Debug)	10m 42s
i686-pc-windows-msvc/msvc (Debug)	18m 38s
i686-pc-windows-msvc/msvc (Release)	22m 30s
x86_64-pc-windows-msvc/msvc (Debug)	17m 15s
x86_64-pc-windows-msvc/msvc (Release)	20m 18s
aarch64-pc-windows-msvc/msvc (Debug)	5m 18s
aarch64-pc-windows-msvc/msvc (Release)	6m 56s
x86_64-apple-darwin/clang (Debug)	16m 17s
x86_64-apple-darwin/clang (Release)	27m 28s
aarch64-apple-darwin/clang (Debug)	8m 52s
aarch64-apple-darwin/clang (Release)	13m 34s
x86_64-unknown-linux-gnu/gcc (Debug)	8m 2s
x86_64-unknown-linux-gnu/gcc (Release)	17m 31s
x86_64-unknown-linux-gnu/clang (Debug)	7m 58s
x86_64-unknown-linux-gnu/clang (Release)	13m 56s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 17m 32s
aarch64-unknown-linux-gnu/gcc (Release)	37m 41s
aarch64-unknown-linux-gnu/clang (Debug)	1h 11m 31s
aarch64-unknown-linux-gnu/clang (Release)	39m 17s
	7h 28m 9s

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