Several Dynamic Instrumentation fixes and improvements

[cimi]

What does this PR do?

This PR adds several fixes and improvements to Go Dynamic Instrumentation:

• Check typeFields is not nil before accessing it to prevent crashes.
• Set specific NotCapturedReason for fields with no location.
• Don't run DWARF inspection for functions with no parameters.

Motivation

Reliability & performance.

Additional Notes

N/A

Possible Drawbacks / Trade-offs

N/A this code is disabled by default.

Describe how to test/QA your changes

N/A this code is disabled by default.