Rename Infrastructure Registry page title to Terraform Module Registry

What does this MR do and why?

Rename Infrastructure Registry page title to Terraform Module Registry

Updates on the group & projects list pages which was missed in Rename "Infrastructure Registry" menu to "Terra... (!116488 - merged)

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Before	After

How to set up and validate locally

1. Visit Project > Operate > Terraform modules
2. Enable feature in rails console Feature.enable(:group_level_infrastructure_registry) or per group Feature.enable(:group_level_infrastructure_registry, Group.find(<group-id>))
3. Visit Group > Operate > Terraform modules

Related to #404075 (closed)