Incorrect Untrusted Header height validation

[oxnr]

Finding 036 - Incorrect Untrusted Header height validation

ID	036
Finding	Incorrect Untrusted Header height validation
Severity	0 - Informational
Description	Untrusted header height is expected to be >= the trusted header but in reality it should just be == to trusted header +1.
Recommendation	Fix the validation step to do an equality check.
Code References	https://github.com/rollkit/rollkit/blob/eccdd0f1793a5ac532011ef4d896de9e0d8bcb9d/types/signed_header.go#L54

[Manav-Aggarwal]

Making the change from >= the trusted header to == trusted header +1 causes issues with https://github.com/celestiaorg/go-header. Needs more investigation.