Span attribute count limit doesn't work by the specification

[Bataran]

Please answer these questions before submitting a bug report.

What version of OpenTelemetry are you using?

"@opentelemetry/api": "^1.0.3",
"@opentelemetry/sdk-trace-base": "^1.0.1"

What version of Node are you using?

v16.13.0

Please provide the code you used to setup the OpenTelemetry SDK

// index.js
const opentelemetry = require('@opentelemetry/api');
const { BasicTracerProvider } = require('@opentelemetry/sdk-trace-base');

new BasicTracerProvider().register();

const span = opentelemetry.trace.getTracer('default').startSpan('foo');

span.setAttribute('key', 'value');
span.setAttribute('foo', 'bar');
span.setAttribute('mirko', 'slavko');
// the span has 1 attribute even though it's been run with OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT=128 and OTEL_ATTRIBUTE_COUNT_LIMIT=1

span.end();

What did you do?

I started the script with OTEL_ATTRIBUTE_COUNT_LIMIT set to 1 and OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT set to 128
env OTEL_ATTRIBUTE_COUNT_LIMIT=1 OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT=128 node index.js

What did you expect to see?

I expected it works by the specification:

If both a general and a model-specific limit are implemented, then the SDK MUST first attempt to use the model-specific limit, if it isn't set, then the SDK MUST attempt to use the general limit

What did you see instead?

The general limit is used instead the model-specific. So the limit is set to 1 not 128

Additional context

Add any other context about the problem here.

[Bataran]

Hi @dyladan, could you assign this to me? I'm already working on it