Bindings: UnknownSchema added data property #2704

Job	Run time
cpp_build (windows-latest)	2m 46s
cpp_build (macos-latest)	3m 17s
cpp_build (ubuntu-latest)	2m 27s
cpp_build (macos-14)	1m 56s
py_build_test (ubuntu-latest, 3.9)	33s
py_build_test (ubuntu-latest, 3.10)	34s
py_build_test (ubuntu-latest, 3.12)	21s
py_build_test (windows-latest, 3.9)	27s
py_build_test (ubuntu-latest, 3.13)	24s
py_build_test (windows-latest, 3.11)	34s
py_build_test (ubuntu-latest, 3.11)	25s
py_build_test (windows-latest, 3.10)	29s
py_build_test (macos-latest, 3.11)	30s
py_build_test (windows-latest, 3.13)	25s
py_build_test (macos-14, 3.9)	25s
py_build_test (macos-14, 3.13)	28s
py_build_test (windows-latest, 3.12)	25s
py_build_test (macos-latest, 3.10)	25s
py_build_test (macos-14, 3.10)	24s
py_build_test (macos-latest, 3.12)	33s
py_build_test (windows-latest, mingw64, msys2)	25s
py_build_test (macos-14, 3.11)	26s
py_build_test (macos-14, 3.12)	36s
py_build_test (macos-latest, 3.13)	25s
package_sdist	0s
package_wheels	0s
	19m 40s

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