fix: Change CMake variable for switch to knowhere-cuvs

[lowener]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.87%. Comparing base (3eb3af5) to head (a7a83bd).
Report is 1 commits behind head on master.

❌ Your project check has failed because the head coverage (69.87%) is below the target coverage (77.00%). You can increase the head coverage or adjust the target coverage.

❗ There is a different number of reports uploaded between BASE (3eb3af5) and HEAD (a7a83bd). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (3eb3af5)	HEAD (a7a83bd)
	2	1

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #40105       +/-   ##
===========================================
- Coverage   80.61%   69.87%   -10.75%     
===========================================
  Files        1468      309     -1159     
  Lines      205585    27573   -178012     
===========================================
- Hits       165729    19266   -146463     
+ Misses      33836     8307    -25529     
+ Partials     6020        0     -6020     

Components	Coverage Δ
Client	∅ <ø> (∅)
Core	69.87% <ø> (+0.01%)	⬆️
Go	∅ <ø> (∅)

see 1160 files with indirect coverage changes