ref: Change native frames from traceId to spanId

[krystofwoldrich]

📢 Type of change

• Enhancement
• Refactoring

📜 Description

This PR changes the native frames from attaching to traceId which can be the same for multiple spans to spanId.

• This fixes potencial situations when multiple root spans share the same trace id. This is possible since JS v8, before Transaction (now Root Spans) would always have unique trace id.
• This is needed for attaching the native frames as span level measurements.

💚 How did you test it?

sample app, unit tests

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled
• All tests passing
• No breaking changes

[github-actions]

Android (legacy) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	394.59 ms	395.65 ms	1.06 ms
Size	17.73 MiB	20.05 MiB	2.32 MiB

[github-actions]

iOS (legacy) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1235.33 ms	1241.64 ms	6.31 ms
Size	2.36 MiB	3.07 MiB	726.55 KiB

Previous results on branch: kw/ref-native-frames-prepare-for-span-measurements

Startup times

Revision	Plain	With Sentry	Diff
87a3e92+dirty	1229.10 ms	1223.33 ms	-5.78 ms

App size

Revision	Plain	With Sentry	Diff
87a3e92+dirty	2.36 MiB	3.07 MiB	726.56 KiB

[github-actions]

iOS (new) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1224.79 ms	1219.59 ms	-5.20 ms
Size	2.92 MiB	3.63 MiB	732.47 KiB

Previous results on branch: kw/ref-native-frames-prepare-for-span-measurements

Startup times

Revision	Plain	With Sentry	Diff
87a3e92+dirty	1231.00 ms	1229.25 ms	-1.75 ms

App size

Revision	Plain	With Sentry	Diff
87a3e92+dirty	2.92 MiB	3.63 MiB	732.48 KiB

[github-actions]

Android (new) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	384.80 ms	417.79 ms	33.00 ms
Size	7.15 MiB	8.33 MiB	1.18 MiB

Previous results on branch: kw/ref-native-frames-prepare-for-span-measurements

Startup times

Revision	Plain	With Sentry	Diff
87a3e92+dirty	362.11 ms	435.40 ms	73.28 ms

App size

Revision	Plain	With Sentry	Diff
87a3e92+dirty	7.15 MiB	8.33 MiB	1.18 MiB

[lucas-zimerman]

Non-blocking questions and also some minor suggestions. Let me know if you need more reviews.