Change quote request construction for fee and quote

[nlordell]

We recently added a regression to the "legacy" api/v1/feeAndQuote API endpoint.

Under the hood, this request uses the same logic as for api/v1/quote which recently introduced a cap on the valid_to field. This broke the aforementioned fee and quote route which was internally converting the request into a quote with valid_to set to u32::MAX.

This PR fixes this by changing the order quote construction to use a "sane" valid_to value: the default validity that is used in the CowSwap UI - which should be super unlikely to ever become "invalid" and break the legacy API.

Test Plan

api/v1/feeAndQuote should start working again!

% curl -s 'http://localhost:8080/api/v1/feeAndQuote/sell?sellToken=0xc778417E063141139Fce010982780140Aa0cD5Ab&buyToken=0xa7D1C04fAF998F9161fC9F800a99A809b84cfc9D&sellAmountBeforeFee=100000000000000000' | jq
{
  "fee": {
    "amount": "220417002424587",
    "expirationDate": "2022-05-30T15:16:45.916306Z"
  },
  "buyAmountAfterFee": "110754541550422939367"
}

[codecov-commenter]

Codecov Report

Merging #234 (156ea99) into main (5e2f927) will increase coverage by 0.01%.
The diff coverage is 95.12%.

❗ Current head 156ea99 differs from pull request most recent head 829c2de. Consider uploading reports for the commit 829c2de to get more accurate results

@@            Coverage Diff             @@
##             main     #234      +/-   ##
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+ Coverage   64.48%   64.49%   +0.01%     
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  Files         189      190       +1     
  Lines       39054    39061       +7     
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+ Hits        25183    25192       +9     
+ Misses      13871    13869       -2