feat: support for instrumentation status fields without the health sidecar (where applicable)

[danielstokes]

add tests, ensure availability with operator during upgrades, make istrumentation status available for other stuff

Description

Type of change

• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• New feature / enhancement (non-breaking change which adds functionality)
• Security fix
• Bug fix (non-breaking change which fixes an issue)

Checklist:

• Documentation has been updated
• This change requires changes in testing:
  • unit tests
  • E2E tests

[codecov]

Codecov Report

❌ Patch coverage is 54.73684% with 86 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.14%. Comparing base (aeb670c) to head (6675110).

Files with missing lines	Patch %	Lines
cmd/main.go	37.95%	83 Missing and 2 partials ⚠️
internal/instrumentation/health.go	97.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #505      +/-   ##
==========================================
+ Coverage   68.74%   71.14%   +2.39%     
==========================================
  Files          53       53              
  Lines        3513     3666     +153     
==========================================
+ Hits         2415     2608     +193     
- Misses        863      865       +2     
+ Partials      235      193      -42     

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