feat(earn): Add earn_supported_pools dynamic config

[finnian0826]

Description

and use in getEarnPositions query. Opted to have the default be the empty list and have the legacy default live in hooks (here). That way if we need to change the legacy default we can and there won't be BC issues in the wallet (can just change on hooks side without release, goes to all versions).

Dynamic config: https://console.statsig.com/4plizaPmWwPL21ASV4QAO0/dynamic_configs/supported_earn_pools

Test plan

CI

Related issues

• Fixes ACT-1367

Backwards compatibility

Yes

Network scalability

If a new NetworkId and/or Network are added in the future, the changes in this PR will:

• Continue to work without code changes, OR trigger a compilation error (guaranteeing we find it when a new network is added)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.74%. Comparing base (2a6433e) to head (2a52e20).
Report is 11 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff            @@
##             main    #6112    +/-   ##
========================================
  Coverage   88.74%   88.74%            
========================================
  Files         727      727            
  Lines       30786    30790     +4     
  Branches     5626     5626            
========================================
+ Hits        27322    27326     +4     
- Misses       3265     3420   +155     
+ Partials      199       44   -155     

Files with missing lines	Coverage Δ
src/positions/saga.ts	91.23% <100.00%> (+0.18%)	⬆️
src/statsig/constants.ts	100.00% <ø> (ø)
src/statsig/types.ts	100.00% <100.00%> (ø)

... and 67 files with indirect coverage changes

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