perf(init): Do not retrieve ActivityManager if API < 35

[romtsn]

📜 Description

We don't need to retrieve ActivityManager on API < 35 since it's not going to be used there.

💡 Motivation and Context

Internal customer report on Sentry SDK init causing slow frames

💚 How did you test it?

📝 Checklist

• I added GH Issue ID & Linear ID
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

[github-actions]

Semver Impact of This PR

🟢 Patch (bug fixes)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).

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New Features ✨

• Add strict trace continuation support by giortzisg in #5136
• Sync file attachments to native by bitsandfoxes in #5211

Internal Changes 🔧

Deps

• Bump codecov/codecov-action from 5.5.2 to 6.0.0 by dependabot in #5246
• Bump getsentry/craft/.github/workflows/changelog-preview.yml from 2.25.0 to 2.25.2 by dependabot in #5245
• Bump getsentry/craft from 2.24.1 to 2.25.2 by dependabot in #5242
• Bump requests from 2.32.4 to 2.33.0 in the uv group across 1 directory by dependabot in #5237
• Bump github/codeql-action from 4.32.6 to 4.35.1 by dependabot in #5243

Other

• (init) Do not retrieve ActivityManager if API < 35 by romtsn in #5275

• Update validate-pr workflow by stephanie-anderson in #5252
• Add THIRD_PARTY_NOTICES.md for vendored third-party code by markushi in #5186

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_{🤖 This preview updates automatically when you update the PR.}

[sentry]

Sentry Build Distribution

App Name	App ID	Version	Configuration	Install Page
SDK Size	io.sentry.tests.size	8.37.1 (1)	release	Install Build

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	303.76 ms	355.92 ms	52.16 ms
Size	0 B	0 B	0 B

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
d217708	355.34 ms	381.39 ms	26.05 ms
694d587	312.37 ms	402.77 ms	90.41 ms
27d7cf8	309.43 ms	364.27 ms	54.85 ms
22f4345	314.79 ms	375.02 ms	60.23 ms
5f14e5d	325.76 ms	368.32 ms	42.56 ms
d217708	411.22 ms	430.86 ms	19.63 ms
b8bd880	314.56 ms	336.50 ms	21.94 ms
62b579c	318.48 ms	367.71 ms	49.24 ms
fc5ccaf	276.52 ms	370.46 ms	93.93 ms
d15471f	286.65 ms	314.68 ms	28.03 ms

App size

Revision	Plain	With Sentry	Diff
d217708	1.58 MiB	2.10 MiB	532.97 KiB
694d587	1.58 MiB	2.19 MiB	620.06 KiB
27d7cf8	1.58 MiB	2.12 MiB	549.42 KiB
22f4345	1.58 MiB	2.29 MiB	719.83 KiB
5f14e5d	1.58 MiB	2.19 MiB	620.00 KiB
d217708	1.58 MiB	2.10 MiB	532.97 KiB
b8bd880	1.58 MiB	2.29 MiB	722.92 KiB
62b579c	0 B	0 B	0 B
fc5ccaf	1.58 MiB	2.13 MiB	557.54 KiB
d15471f	1.58 MiB	2.13 MiB	559.54 KiB