Fix 862: For hashEdDSA and Ed448, sign() and verify() modified the st… #1093

Job	Run time
build_python_27 (ubuntu-22.04, no)	2m 50s
mypy	19s
build_python_27 (windows-latest, no)	4m 22s
build_python_27 (windows-latest, yes)	4m 25s
build_python_27 (ubuntu-22.04, yes)	2m 47s
test_c_windows (win32)	1m 36s
test_c_linux (0, x32)	1m 34s
python_no_gil	6m 7s
test_c_linux (1, x32)	1m 42s
build (3.8, yes, ubuntu-22.04)	2m 27s
build (3.8, no, ubuntu-22.04)	2m 38s
test_c_windows (x64)	2m 2s
build (3.13, yes, windows-latest)	4m 28s
test_c_linux (1, x64)	1m 3s
test_c_linux (0, x64)	1m 13s
build (3.7, no, ubuntu-22.04)	2m 45s
build (3.7, yes, ubuntu-22.04)	2m 44s
build (3.12, yes, ubuntu-22.04)	4m 45s
build (3.11, no, ubuntu-22.04)	4m 49s
build (3.13, yes, macos-13)	5m 14s
build (pypy2.7, no, ubuntu-latest)	1m 42s
build (3.13, yes, ubuntu-22.04-arm)	5m 5s
build (3.10, yes, ubuntu-22.04)	4m 52s
build (pypy3.9, no, ubuntu-latest)	4m 25s
build (3.10, no, ubuntu-22.04)	4m 45s
build (3.12, no, ubuntu-22.04)	4m 45s
build (3.9, no, ubuntu-22.04)	4m 58s
build (3.13, no, windows-latest)	4m 16s
build (3.13, yes, ubuntu-22.04)	4m 55s
build (3.13, no, ubuntu-22.04)	5m 3s
build (3.9, yes, ubuntu-22.04)	4m 47s
build (3.11, yes, ubuntu-22.04)	4m 34s
	1h 53m 57s

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