fix a bug for repeated axes in N-D c2c FFT #632

Job	Run time
build_linux (3.9)	2m 52s
build_windows (3.10)	8m 11s
build_linux (3.12)	2m 36s
build_linux (3.13)	2m 37s
build_windows (3.13)	12m 56s
build_linux (3.10)	2m 38s
build_windows (3.11)	7m 28s
build_windows (3.9)	8m 17s
build_windows (3.12)	7m 39s
build_linux (3.11)	2m 38s
test_linux (3.9, false, ubuntu-latest)	2m 16s
test_linux (3.12, false, ubuntu-latest)	1m 26s
test_linux (3.13, false, ubuntu-latest)	1m 16s
test_linux (3.11, false, ubuntu-latest)	1m 45s
test_linux (3.10, false, ubuntu-latest)	1m 7s
test_windows (3.12, false, windows-latest)	2m 52s
test_windows (3.9, false, windows-latest)	3m 28s
test_windows (3.10, false, windows-latest)	3m 37s
test_windows (3.13, false, windows-latest)	2m 58s
test_windows (3.11, false, windows-latest)	3m 22s
	1h 21m 59s

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