refactor(share/availability): Move window and constants to share/avai… #9655

Job	Run time
Markdown Lint	8s
setup	1s
yamllint	6s
hadolint / hadolint	7s
goreleaser	0s
upload-docs	0s
go-ci / Setup	1s
go-ci / Unit Tests Coverage (ubuntu-latest)	5m 19s
go-ci / Lint Imports	7s
go-ci / Go Mod Tidy Check	29s
go-ci / Unit Tests Coverage (macos-14)	4m 4s
go-ci / Lint	2m 28s
go-ci / Integration Tests / Da Tests Sync	2m 50s
go-ci / Integration Tests / Integration Tests Blob	48s
go-ci / Integration Tests / Integration Tests Fraud	2m 22s
go-ci / Integration Tests / Integration Tests API	3m 12s
go-ci / Integration Tests / Integration Tests ND	2m 56s
go-ci / Integration Tests / Integration Tests p2p	2m 58s
go-ci / Integration Tests / Integration Tests Reconstruction	2m 28s
go-ci / Integration Tests / Integration Tests Sync	3m 17s
go-ci / Integration Tests / Integration Tests Sync	2m 39s
	36m 20s

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