Respect maxSpans for nested child spans

[romtsn]

📜 Description

💡 Motivation and Context

Closes #3058

💚 How did you test it?

📝 Checklist

• I reviewed the submitted code.
• 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.
• 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

[markushi]

LGTM! Just a minor concern.

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	348.32 ms	419.16 ms	70.84 ms
Size	1.72 MiB	2.26 MiB	552.77 KiB

Baseline results on branch: feat/7.0.0

Startup times

Revision	Plain	With Sentry	Diff
362a653	391.00 ms	432.98 ms	41.98 ms
6a40795	370.00 ms	437.33 ms	67.33 ms
db8763d	386.60 ms	453.66 ms	67.06 ms
4355d78	377.47 ms	442.96 ms	65.49 ms
6684058	414.76 ms	511.46 ms	96.70 ms
d134818	371.35 ms	436.22 ms	64.87 ms
ff784c6	388.51 ms	461.90 ms	73.39 ms

App size

Revision	Plain	With Sentry	Diff
362a653	1.72 MiB	2.26 MiB	551.33 KiB
6a40795	1.72 MiB	2.26 MiB	550.26 KiB
db8763d	1.72 MiB	2.26 MiB	550.22 KiB
4355d78	1.72 MiB	2.26 MiB	551.33 KiB
6684058	1.72 MiB	2.26 MiB	550.19 KiB
d134818	1.72 MiB	2.26 MiB	551.33 KiB
ff784c6	1.72 MiB	2.26 MiB	550.22 KiB

Previous results on branch: rz/fix/maxspans-nested

Startup times

Revision	Plain	With Sentry	Diff
b7834d0	365.46 ms	433.39 ms	67.93 ms

App size

Revision	Plain	With Sentry	Diff
b7834d0	1.72 MiB	2.26 MiB	552.77 KiB