[MBL-703] Prelaunch Page Watch Count Update

[msadoon]

📲 What

We noticed that prelaunch page watch count was not being accurately update after saving/unsaving the project.

🤔 Why

Matching Android functionality. Also makes more sense to show the new follower count after following a project.

🛠 How

Modified the .graphql files for Unwatch and Watch project to include watchesCount.
Updated the envelope to have this property after getting it back from the mutation data.
The PledgeStateCTAType has a new property within the prelaunch enum case for watchesCount.

We merge the new pledge state with watchesCount to the watchesCountText in PledgeCTAContainerViewViewModel which was previously just using the project it was configured with for that text.

All the other signals/notifications should be the same, it's just about keeping track of the watchesCount after the network response returns for unwatchProject and watchProject.

👀 See

Before 🐛

RPReplay_Final1681320063.MP4

After 🦋

RPReplay_Final1681319958.MP4

✅ Acceptance criteria

• Ensure watching and unwatching a prelaunch project is accurate to the web.

[scottkicks]

Nice! looks great and works as expected 👍