[FEAT] Get native execution enablement from DAFT_RUNNER

[desmondcheongzx]

We added a new DAFT_RUNNER environment variable, so we should use this environment variable when creating the execution configuration.

[codspeed-hq]

CodSpeed Performance Report

Merging #3409 will degrade performances by 27.43%

_{Comparing desmondcheongzx:add-daft-runner-check-to-context (97c32e3) with main (8052de7)}

Summary

❌ 2 regressions
✅ 15 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	desmondcheongzx:add-daft-runner-check-to-context	Change
❌	test_count[1 Small File]	3.3 ms	3.7 ms	-10.18%
❌	test_iter_rows_first_row[100 Small Files]	230.4 ms	317.5 ms	-27.43%

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.36%. Comparing base (8052de7) to head (97c32e3).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3409   +/-   ##
=======================================
  Coverage   77.35%   77.36%           
=======================================
  Files         684      684           
  Lines       83627    83635    +8     
=======================================
+ Hits        64688    64701   +13     
+ Misses      18939    18934    -5     

Files with missing lines	Coverage Δ
src/common/daft-config/src/lib.rs	81.69% <100.00%> (+1.69%)	⬆️

... and 3 files with indirect coverage changes

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