Add context-friendly use_scope, use_isolation_scope

[sentrivana]

use_scope and use_isolation_scope don't have POTel-friendly versions that work correctly with the OTel context yet. Adding them.

[codecov]

❌ 3778 Tests Failed:

Tests completed	Failed	Passed	Skipped
16713	3778	12935	1916

View the top 3 failed tests by shortest run time

tests.integrations.celery.test_celery test_transaction_events[<lambda>1-error]

Stack Traces | 0s run time

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tests.integrations.celery.test_update_celery_task_headers test_span_with_transaction

Stack Traces | 0s run time

No failure message available

tests.integrations.httpx.test_httpx test_option_trace_propagation_targets[httpx_client14-trace_propagation_targets14-https://example.com-True]

Stack Traces | 0s run time

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