chore(tokens): update price history endpoint

[bakoushin]

Description

Fetch price history from the new https://api.mainnet.valora.xyz/getTokenPriceHistory enpdoint instead of the blockchain-api.

Test plan

• Tested manually
• Updated unit test

Related issues

• Part of RET-1240

Backwards compatibility

Y

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 89.02%. Comparing base (bef3560) to head (cfe2bfc).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6367      +/-   ##
==========================================
- Coverage   89.02%   89.02%   -0.01%     
==========================================
  Files         735      735              
  Lines       31325    31327       +2     
  Branches     5506     5809     +303     
==========================================
+ Hits        27887    27888       +1     
+ Misses       3393     3246     -147     
- Partials       45      193     +148     

Files with missing lines	Coverage Δ
src/priceHistory/saga.ts	90.00% <100.00%> (ø)
src/web3/networkConfig.ts	100.00% <100.00%> (ø)

... and 66 files with indirect coverage changes

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[kathaypacific]

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