Remove hosted-service option from `graph init`

[alex-pakalniskis]

Which packages are impacted by your issue?

@graphprotocol/graph-cli

Describe the issue

Running graph init without specifying a --product parameter forces users to select between subgraph-studio and hosted-service (see screenshot below).

Reproduction

Graph CLI

Steps to Reproduce the Bug or Issue

Expected behavior

User should not be able to select a deprecated service.

Screenshots or Videos

No response

Platform

• OS: Linux
• NodeJS: 20.17.0
• @graphprotocol/graph-cli version: 0.86.0

Subgraph Manifest

No response

Subgraph GraphQL Schema

No response

Additional context

No response

[0237h]

Done in #1680