fix(android): merge tombstone and Native SDK event message.

[supervacuus]

📜 Description

When merging tombstone and Native SDK events, we assume the message from the Native SDK. However, in most cases, this property will be empty from the Native SDK, whereas we explicitly construct a message from the tombstone that closely matches what debuggerd would print in logcat. This PR uses the tombstone message if the native envelope doesn't provide one.

💡 Motivation and Context

Better crash information.

💚 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.

[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 ✨

• (distribution) Add installGroupsOverride parameter by runningcode in #5066
• (replay) Track custom masking usage via integration by markushi in #5070

Bug Fixes 🐛

• (android) Merge tombstone and Native SDK event message. by supervacuus in #5095

Internal Changes 🔧

Deps

• Bump getsentry/craft from 2.20.1 to 2.21.2 by dependabot in #5083
• Bump github/codeql-action from 4.32.0 to 4.32.2 by dependabot in #5082
• Update Native SDK to v0.12.6 by github-actions in #5071

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

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	367.02 ms	415.26 ms	48.24 ms
Size	1.58 MiB	2.28 MiB	718.66 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
fcec2f2	328.91 ms	387.75 ms	58.84 ms
ee747ae	400.46 ms	423.61 ms	23.15 ms
23d6b12	354.10 ms	408.38 ms	54.28 ms
27d7cf8	314.17 ms	347.00 ms	32.83 ms
bbc35bb	298.53 ms	372.17 ms	73.64 ms
d15471f	342.08 ms	415.44 ms	73.35 ms
8687935	294.00 ms	304.02 ms	10.02 ms
d364ace	411.72 ms	430.81 ms	19.10 ms
ee747ae	415.92 ms	470.15 ms	54.23 ms
ee747ae	554.98 ms	611.50 ms	56.52 ms

App size

Revision	Plain	With Sentry	Diff
fcec2f2	1.58 MiB	2.12 MiB	551.50 KiB
ee747ae	1.58 MiB	2.10 MiB	530.95 KiB
23d6b12	1.58 MiB	2.10 MiB	532.31 KiB
27d7cf8	1.58 MiB	2.12 MiB	549.42 KiB
bbc35bb	1.58 MiB	2.12 MiB	553.01 KiB
d15471f	1.58 MiB	2.13 MiB	559.54 KiB
8687935	1.58 MiB	2.19 MiB	619.17 KiB
d364ace	1.58 MiB	2.11 MiB	539.75 KiB
ee747ae	1.58 MiB	2.10 MiB	530.95 KiB
ee747ae	1.58 MiB	2.10 MiB	530.95 KiB