feat(sdk-node): always set up propagation and context manager

[pichlermarc]

Which problem is this PR solving?

This was discussed in a SIG meeting a long time ago. Makes a ContextManager and a default TextMapPropagator be registered always, not just when using the Trace SDK.

Context management is the cornerstone of many OTel features, so it makes sense to also have it on by default in the OTel JS Node.js SDK. When it is missing it is a common source for confusion, I've seen:

• people that want logs, but don't want traces, but still want a traceId attached to their logs that was created by a different service - this needs a propagator and context manager
• people that want to only propagate context, but don't want telemetry from that service - so they needed both a propagator and context manager.
• people that run into http.route (or it's modern replacement) not being on metrics when no ContextManager is registered, since we need it to communicate from higher-level instrumentations to the lower-level HttpInstrumentation. Missing http_route attribute on the http_server_duration metric when traces export is disabled #3862

Once we have #5147, then there will also an expectation for a ContextManager to be registered for all metrics features to work, even when not using the http instrumentation.

Fixes #3862
Fixes #5640

(also this PR a way for me to find how many ways there are to misspell propagator)

Type of change

• Bug fix (depending on how you look at it)
• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• Unit tests

[codecov]

Codecov Report

❌ Patch coverage is 96.66667% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 95.24%. Comparing base (f85cee1) to head (6da97b9).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...ental/packages/opentelemetry-sdk-node/src/utils.ts	95.65%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5930   +/-   ##
=======================================
  Coverage   95.24%   95.24%           
=======================================
  Files         315      315           
  Lines        8604     8626   +22     
  Branches     1798     1801    +3     
=======================================
+ Hits         8195     8216   +21     
- Misses        409      410    +1     

Files with missing lines	Coverage Δ
...imental/packages/opentelemetry-sdk-node/src/sdk.ts	96.03% <100.00%> (ø)
...ental/packages/opentelemetry-sdk-node/src/utils.ts	91.91% <95.65%> (+0.68%)	⬆️

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[pichlermarc]

Note: these are not new, I moved these into the above describe block, these tests seemed to be out of place unintentionally. Sorry for the excessive diff.

[david-luna]

LGTM. I have a comment about registering context manager at the beginning of the start method.

[pichlermarc]

LGTM. I have a comment about registering context manager at the beginning of the start method.

nice! I hadn't thought of that 🙂 Addressed in 8d4b3c5