chore: Disable flaky OTelSpan.testSetActive_givenParentSpan() test for tvOS

[ncreated]

What and why?

📦 Same as #1881 but for tvOS.

How?

Disabling flaky test for tvOS target.

Review checklist

• Feature or bugfix MUST have appropriate tests (unit, integration)
• Make sure each commit and the PR mention the Issue number or JIRA reference
• Add CHANGELOG entry for user facing changes

Custom CI job configuration (optional)

• Run unit tests for Core, RUM, Trace, Logs, CR and WVT
• Run unit tests for Session Replay
• Run integration tests
• Run smoke tests
• Run tests for tools/

[datadog-datadog-prod-us1]

Datadog Report

Branch report: ncreated/chore/disable-flaky-OTel-tests-for-tvOS
Commit report: 3200a0c
Test service: dd-sdk-ios

✅ 0 Failed, 3234 Passed, 0 Skipped, 2m 39.5s Total Time
🔻 Test Sessions change in coverage: 6 decreased, 3 increased, 4 no change

🔻 Code Coverage Decreases vs Default Branch (6)

This report shows up to 5 code coverage decreases.

• test DatadogTraceTests tvOS 54.92% (-0.2%) - Details
• test DatadogRUMTests tvOS 81.4% (-0.08%) - Details
• test DatadogCoreTests iOS 73.91% (-0.06%) - Details
• test DatadogTraceTests iOS 54.63% (-0.03%) - Details
• test DatadogCrashReportingTests tvOS 27.3% (-0.02%) - Details