Close Flow State voting/funding actions in Superfluid campaign widget #239

Summary

GoodBuilders Season 4 ended Sept 29 — closes two actions in the Superfluid campaign widget and restarts Ecosystem action points for the rest.

Items

1. Revert PR Pause Ecosystem action points in Superfluid campaign widget #235 ("Pause Ecosystem action points in Superfluid campaign widget") — that pause is being replaced by the targeted closures below.
2. Disable the Ecosystem action Flow State Funding ("Fund GoodBuilders Season 4") — card stays visible, links removed from card and button, button text becomes "Closed", whole card/button greyed-out and non-interactive.
3. Disable the GoodDollar action Vote on Flow State — same treatment.
4. Add 3 FAQ entries:
   • Why are Vote on Flow State and Funding closed?
   • When did Ecosystem action points restart?
   • Are Ecosystem actions still earning points?

Requested by @meri Fernandez in #gd-patch.

Acceptance criteria

• PR Pause Ecosystem action points in Superfluid campaign widget #235's changes are reverted
• "Vote on Flow State" and "Fund GoodBuilders Season 4" render disabled (greyed-out, "Closed" label, no link, non-interactive) while remaining visible
• Other actions (Claim UBI, Invite users, Gardens donate/fund) remain fully active
• New FAQ entries present with exact copy
• Playwright suite passes (excluding known pre-existing wallet-chip disconnect failures)