Merge branch '417969-remove-graphql-field-hassolutions-from-vulnerabilitytype' into 'master'

Remove GraphQL field `hasSolutions` from VulnerabilityType

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/137668



Merged-by: Siddharth Dungarwal <sdungarwal@gitlab.com>
Approved-by: Serena Fang <sfang@gitlab.com>
Approved-by: Siddharth Dungarwal <sdungarwal@gitlab.com>
Co-authored-by: Michał Zając <mzajac@gitlab.com>