chore: do not inject span context when instrumentation is suppressed

[dyladan]

Fixes #2067

[codecov]

Codecov Report

Merging #2082 (81cf999) into main (a457776) will increase coverage by 0.03%.
The diff coverage is 100.00%.

❗ Current head 81cf999 differs from pull request most recent head 64291b1. Consider uploading reports for the commit 64291b1 to get more accurate results

@@            Coverage Diff             @@
##             main    #2082      +/-   ##
==========================================
+ Coverage   93.03%   93.07%   +0.03%     
==========================================
  Files         154      154              
  Lines        5976     5991      +15     
  Branches     1246     1256      +10     
==========================================
+ Hits         5560     5576      +16     
+ Misses        416      415       -1     

Impacted Files	Coverage Δ
...emetry-core/src/baggage/propagation/HttpBaggage.ts	98.24% <100.00%> (ø)
...y-core/src/context/propagation/HttpTraceContext.ts	100.00% <100.00%> (ø)
...entelemetry-propagator-b3/src/B3MultiPropagator.ts	100.00% <100.00%> (ø)
...es/opentelemetry-propagator-b3/src/B3Propagator.ts	100.00% <100.00%> (ø)
...ntelemetry-propagator-b3/src/B3SinglePropagator.ts	100.00% <100.00%> (ø)
...propagator-jaeger/src/JaegerHttpTracePropagator.ts	100.00% <100.00%> (ø)
...emetry-core/src/platform/node/RandomIdGenerator.ts	93.75% <0.00%> (+6.25%)	⬆️

[Flarna]

Suggested change

	assert.deepStrictEqual(carrier[TRACE_PARENT_HEADER], undefined);
	assert.strictEqual(carrier[TRACE_PARENT_HEADER], undefined);

same on next line

[dyladan]

Curious if there is some advantage to using strict over deep strict?

[Flarna]

in this usage where one element is undefined there is most likely no difference. But in other usecases there is:

assert.deepStrictEqual({}, {})  // throws
assert.strictEqual({}, {}) // doesn't throw

At least for me the use of deepXXX asserts indicates that deep objects should be compared which is not the case here.

But feel free to ignore my comments regarding this is you feel the opposite.

[dyladan]

I don't have an opinion at all, was just curious what the reasoning was behind yours.