[cbuildgen] Disable incremental link in debug config

[brondani]

With the new GH Runner Image for windows-2022 20250921.44.1 the build of cbuildgen integration tests started to fail with an internal linker error:

LINK : fatal error LNK1000: unknown error at 00007FF745A8B899; consult documentation for technical support options

Proposed workaround: disable incremental linking because it tends to get flaky on large graphs.

[github-actions]

Test Results

  7 files   53 suites   5m 21s ⏱️
185 tests 168 ✅ 17 💤 0 ❌
692 runs  624 ✅ 68 💤 0 ❌

Results for commit 64e9832.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.68%. Comparing base (ed5db98) to head (64e9832).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2219   +/-   ##
=======================================
  Coverage   66.68%   66.68%           
=======================================
  Files         181      181           
  Lines       38590    38590           
  Branches    22617    22617           
=======================================
  Hits        25733    25733           
  Misses       8086     8086           
  Partials     4771     4771           

Flag	Coverage Δ
buildmgr-cov	73.95% <ø> (ø)

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