Merge branch '369240-prevent-preloading-deployments-in-environment-model' into 'master'

Prevent preloading deployment associations with legacy approach

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/104149



Merged-by: Shinya Maeda <shinya@gitlab.com>
Approved-by: Allen Cook <acook@gitlab.com>
Approved-by: Shinya Maeda <shinya@gitlab.com>
Co-authored-by: Bala Kumar <sbalakumar@gitlab.com>