Telemetryapi receiver not respecting OTEL_RESOURCE_ATTRIBUTES env var

Describe the bug
Similar to #1851, it looks like the telemetryapi receiver is not picking up the additional resource attributes set in the OTEL_RESOURCE_ATTRIBUTES env variable.

Steps to reproduce

• Create and instrument a Lambda function
• Set the OTEL_RESOURCE_ATTRIBUTES environment variable with some key/values to put on each log statement i.e
  • OTEL_RESOURCE_ATTRIBUTES: 'deployment.environment.name=dev'
• Enable telemetryapi receiver for logs and traces
• Send logs to your OTEL backend of choice and check for the presence of the additional resource attributes

What did you expect to see?
I expected to see the 'deployment.environment.name' attribute in log statements

What did you see instead?
The values in OTEL_RESOURCE_ATTRIBUTES are missing from log statements

What version of collector/language SDK version did you use?

• 0.19.0 (collector layer)
• 0.18.0 (nodejs layer)

What language layer did you use?
javascript

Additional context
The fix looks like it might be very similar to the fix for #1851 => explicitly read the env var and add the key/values to the resource map.

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Start at the telemetryapi receiver and compare its resource handling with the fix described in issue #1851. Reproduce the Lambda setup with OTEL_RESOURCE_ATTRIBUTES set to deployment.environment.name=dev, then verify that the attribute appears on exported logs and traces.