Move FAST.Farm K-d tree logic into AWAE_UpdateStates

[deslaughter]

This PR is ready to merge

Feature or improvement description

This PR moves the new K-d tree logic from AWAE_CalcOutput to AWAE_UpdateStates so that it is only calculated once, when updating the ambient wind. This will make it possible to selectively read the AMReX wind files for parts of the low-resolution grid without recalculating which grid partitions to read in multiple places.

This required a change in where AWAE_UpdateStates was called, moving it from FARM_UpdateStates to FARM_CalcOuput. In this process an error was discovered in the initial call to AWAE_UpdateStates, during AWAE_Init, where the wrong time was passed, resulting in the same wind velocities being used for the first two low-res time steps when the ambient wind was modeled in InflowWind. This PR fixes the issue and updates the FAST.FARM regression tests.

Impacted areas of the software

FAST.Farm and AWAE

Test results, if applicable

FAST.Farm regression test benchmarks were updated after the bug in AWAE_Init was fixed.

[Copilot]

Pull request overview

This PR refactors FAST.Farm's wake modeling workflow by moving K-d tree calculations from AWAE_CalcOutput to AWAE_UpdateStates, ensuring wake-grid interactions are computed only once per ambient wind update. A critical bug was also fixed where AWAE_Init passed an incorrect time value, causing duplicate wind velocities for the first two low-resolution time steps when using InflowWind.

Key Changes:

• Moved K-d tree logic from AWAE_CalcOutput to a new subroutine CalcWakePointTurbineGridInteractions called in AWAE_UpdateStates
• Relocated AWAE_UpdateStates call from FARM_UpdateStates to FARM_CalcOutput
• Fixed timing bug in AWAE_Init and corrected time offsets in wind data retrieval calls

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
reg_tests/r-test	Updated regression test baseline to reflect fixed wind velocity timing
modules/awae/src/AWAE.f90	Added new subroutine for K-d tree calculations, removed duplicate code from CalcOutput functions, and corrected time parameter usage throughout
glue-codes/fast-farm/src/FAST_Farm_Subs.f90	Moved AWAE_UpdateStates call from FARM_UpdateStates to FARM_CalcOutput and removed now-unused error handling variables

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