Add support for specialization constants #6256

Job	Run time
build_linux (3.10)	7m 56s
build_linux (3.11)	7m 10s
build_windows (3.13)	8m 29s
build_windows (3.14)	12m 4s
build_linux (3.12)	6m 49s
build_windows (3.10)	8m 53s
build_linux (3.14)	7m 4s
build_windows (3.12)	10m 13s
build_linux (3.13)	6m 51s
build_windows (3.11)	9m 4s
test_linux (3.11, false, ubuntu-latest)	2m 19s
test_linux (3.14, false, ubuntu-latest)	2m 29s
test_linux (3.12, false, ubuntu-latest)	2m 27s
test_linux (3.10, false, ubuntu-latest)	2m 27s
test_examples_linux (3.11, false, ubuntu-latest)	7m 30s
test_linux (3.13, false, ubuntu-latest)	2m 28s
upload_linux	-1s
test_windows (3.12, false, windows-latest)	3m 24s
test_windows (3.13, false, windows-latest)	3m 19s
test_windows (3.11, false, windows-latest)	2m 57s
test_windows (3.10, false, windows-latest)	3m 16s
test_windows (3.14, false, windows-latest)	3m 17s
upload_windows	0s
Clean up anaconda packages	0s
	2h 0m 25s

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