[release/6.0] [mono][debugger] Fix Debugger.Break() behavior when running on release mode

[thaystg]

Backport of #79822 to release/6.0

/cc @thaystg

Customer Impact

When the customer application has a Debugger.Break it was crashing the app when running on release mode.
Fixes https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1675269

Testing

Manually tested.

Risk

Low risk, only calling raise(SIGTRAP) when native debugging option is enabled.

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Issue Details

---

Backport of #79822 to release/6.0

/cc @thaystg

Customer Impact

When the customer application has a Debugger.Break it was crashing the app when running on release mode.
Fixes https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1675269

Testing

Manually tested.

Risk

Low risk, only calling raise(SIGTRAP) when native debugging option is enabled.

Author:	thaystg
Assignees:	thaystg
Labels:	area-Debugger-mono
Milestone:	-

[carlossanlop]

Approved by Tactics via email (6.0.14).
Signed off by area owner.
No OOB changes needed (mono native code).
CI failures unrelated:

• [6.0] AppleTV CI failures: Failure to launch simulator OR failure to authenticate request #80628
• [6.0] WASM CI failure: WorkloadManifestCompositionException: Workload manifest dependency 'Emscripten' version '6.0.4' is lower than version '6.0.13' required by manifest 'mono.toolchain' #80574 (a fix was already merged to the branch)
• Nuget migration issues: https://github.com/dotnet/runtime/issues/806194
  Ready to merge.