opentelemetry-sdk: Add ability to refresh process sensitive Resource attributes (#5280)

* opentelemetry-sdk: add ability to refresh process-sensitive resource attributes

* update formatting

* add changelog fragment

* conditionally run 'os.register_at_fork' to support pypy3

* small type hint change

* fix docs build errors and typechecking errors

* address copilot comments

* revert uv.lock changeS

* add os.waitstatus_to_exitcode() to tracer provider fork script

* make update resource private

* simplify fork-based unit tests

* update ServiceInstanceIdResourceDetector to return True for is_process_sensitive()

* switch to using is_process_dependent for ResourceDetector method

* remove all references of 'sensitive'

* update changelog fragment

* document post-fork refresh behavior for service instance id resource detector