fix: Support geo in SentryGeo initWithDictionary

[antonis]

📜 Description

Add initWithDictionary: to SentryGeo (via a private header) and handle the "geo" key in SentryUser.initWithDictionary: so that geo data is properly deserialized into the geo property instead of landing in the unknown dictionary.

Previously, passing a dictionary with a "geo" key to SentryUser.initWithDictionary: would store it in unknown. During serialization, unknown keys are written on top of the serialized dict, overwriting the properly-set self.geo property — causing duplicated or incorrect geo data.

💡 Motivation and Context

Hybrid SDKs (e.g. React Native) pass user dictionaries that include "geo". Without this fix, they need to manually strip the "geo" key before calling initWithDictionary: and set it separately — a workaround that was identified in getsentry/sentry-react-native#6261 (comment).

💚 How did you test it?

• Added test for initWithDictionary: with geo fields
• Added round-trip test (dict → initWithDictionary → serialize) to verify geo survives serialization without leaking into unknown
• All 14 SentryUserTests pass

📝 Checklist

• 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.
• If I added a new public API, I also added it to the SentryObjC wrapper.

#skip-changelog

[cursor]

✅ Bugbot reviewed your changes and found no new issues!

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.612%. Comparing base (7087caa) to head (62f8b36).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #8026       +/-   ##
=============================================
+ Coverage   86.603%   86.612%   +0.009%     
=============================================
  Files          550       550               
  Lines        31695     31709       +14     
  Branches     13043     13056       +13     
=============================================
+ Hits         27449     27464       +15     
- Misses        4196      4198        +2     
+ Partials        50        47        -3     

Files with missing lines	Coverage Δ
Sources/Sentry/SentryGeo.m	94.000% <100.000%> (+1.692%)	⬆️
Sources/Sentry/SentryUser.m	95.918% <100.000%> (+0.085%)	⬆️

... and 7 files with indirect coverage changes

---

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[sentry]

📲 Install Builds

iOS

🔗 App Name	App ID	Version	Configuration
SDK-Size	io.sentry.sample.SDK-Size	9.16.1 (1)	Release

⚙️ sentry-cocoa Build Distribution Settings

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1233.27 ms	1264.67 ms	31.39 ms
Size	24.14 KiB	1.17 MiB	1.15 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
dd70dad	1233.87 ms	1269.91 ms	36.04 ms
6b08499	1216.67 ms	1247.76 ms	31.08 ms
eaa30de	1232.96 ms	1265.43 ms	32.47 ms
69745fc	1226.70 ms	1259.72 ms	33.02 ms
92fada5	1217.60 ms	1252.89 ms	35.30 ms
1887b2e	1218.51 ms	1243.06 ms	24.55 ms
2509eff	1219.50 ms	1253.57 ms	34.07 ms
e0946cf	1233.33 ms	1258.57 ms	25.24 ms
9c19a06	1217.77 ms	1248.98 ms	31.21 ms
07d6099	1224.06 ms	1247.13 ms	23.06 ms

App size

Revision	Plain	With Sentry	Diff
dd70dad	24.14 KiB	1.17 MiB	1.15 MiB
6b08499	24.14 KiB	1.15 MiB	1.13 MiB
eaa30de	24.14 KiB	1.17 MiB	1.15 MiB
69745fc	24.14 KiB	1.15 MiB	1.13 MiB
92fada5	24.14 KiB	1.17 MiB	1.15 MiB
1887b2e	24.14 KiB	1.15 MiB	1.13 MiB
2509eff	24.14 KiB	1.17 MiB	1.15 MiB
e0946cf	24.14 KiB	1.16 MiB	1.13 MiB
9c19a06	24.14 KiB	1.16 MiB	1.13 MiB
07d6099	24.14 KiB	1.17 MiB	1.15 MiB

Previous results on branch: fix/geo-init-with-dictionary

Startup times

Revision	Plain	With Sentry	Diff
85d56f0	1238.32 ms	1273.45 ms	35.13 ms

App size

Revision	Plain	With Sentry	Diff
85d56f0	24.14 KiB	1.17 MiB	1.15 MiB

[itaybre]

Almost LGTM, just one comment

[philprime]

LGTM