[MBL-3164] Update the ppo card id to only be based on the project id

[ifosli]

📲 What

Update the PPO card identifier to be equal to the project id, instead of also being based on the tier type and actions.

🤔 Why

I did some testing and this doesn't make a difference in most cases. But I think it'll make PPO actions a little better in the edge case where a card tier type changes, but the cards position in the list doesn't change. I wasn't able to find this edge case in any of my test accounts, but it could theoretically make the auto refresh better for some users.

Also, now that we've decided we'll have at most one card per project id, this change makes the identifier more intuitive for any future work in this space.

👀 See

Jira

✅ Acceptance criteria

• PPO behavior isn't worse (in almost all cases, the list will still behave the same)

⏰ TODO

• Wait for https://kickstarter.atlassian.net/browse/MBL-3139 to be fixed and merged before merging this pr. (Currently, there could be separate PPO cards for a canceled and successful pledge to the same project, and I want those cards to have separate ids while they can coexist)

[amy-at-kickstarter]

LGTM!

My one thought is we might want to add an assertion somewhere that logs if we ever get duplicate projects in this list. It feels impossible, but better safe than sorry.