Add 10m height coordinate to SfcWind GFDL-CM4 instead of 2m height

[Karen-A-Garcia]

This is a follow up for issue #2384. The only thing I changed in the ESMValCore/esmvalcore/cmor/_fixes/cmip6/gfdl_cm4.py as that now the fix SfcWind is calling Uas (10m) instead of Tas (2m). The Uas and Tas fixes already have tests.

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.07%. Comparing base (390285e) to head (3871768).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2385 +/- ## ======================================= Coverage 94.07% 94.07% ======================================= Files 241 241 Lines 13422 13422 ======================================= Hits 12627 12627 Misses 795 795 ```

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