impr: Avoid creating unnecessary UI transactions

[philipphofmann]

📜 Description

Skip creating user interaction transactions that would time out without any children.

💡 Motivation and Context

Fixes GH-2407

💚 How did you test it?

Unit tests

📝 Checklist

You have to check all boxes before merging:

• 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

[philprime]

LGTM, thanks for removing the try!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.496%. Comparing base (b1ad543) to head (7f44a0b).
Report is 1 commits behind head on main.

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #4957       +/-   ##
=============================================
+ Coverage   92.480%   92.496%   +0.015%     
=============================================
  Files          666       666               
  Lines        78837     78844        +7     
  Branches     28532     28538        +6     
=============================================
+ Hits         72909     72928       +19     
+ Misses        5828      5817       -11     
+ Partials       100        99        -1     

Files with missing lines	Coverage Δ
...urces/Sentry/SentryUIEventTrackerTransactionMode.m	100.000% <100.000%> (ø)
...egrations/UIEvents/SentryUIEventTrackerTests.swift	99.612% <100.000%> (+0.012%)	⬆️

... and 8 files with indirect coverage changes

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[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1225.41 ms	1247.98 ms	22.57 ms
Size	22.30 KiB	823.14 KiB	800.84 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
5b3518e	1242.27 ms	1257.81 ms	15.55 ms
a0cc9d6	1235.22 ms	1248.37 ms	13.14 ms
556c407	1256.56 ms	1274.60 ms	18.04 ms
98cca71	1199.08 ms	1227.36 ms	28.28 ms
8cf5bca	1231.33 ms	1237.81 ms	6.48 ms
84fb4d9	1212.45 ms	1223.39 ms	10.94 ms
d3630c3	1256.78 ms	1274.10 ms	17.32 ms
de033da	1206.55 ms	1217.08 ms	10.53 ms
f278bab	1236.50 ms	1251.75 ms	15.25 ms
369222e	1232.14 ms	1258.90 ms	26.76 ms

App size

Revision	Plain	With Sentry	Diff
5b3518e	21.58 KiB	612.11 KiB	590.53 KiB
a0cc9d6	21.58 KiB	706.47 KiB	684.88 KiB
556c407	22.85 KiB	413.98 KiB	391.13 KiB
98cca71	22.85 KiB	411.14 KiB	388.29 KiB
8cf5bca	21.58 KiB	671.30 KiB	649.72 KiB
84fb4d9	22.84 KiB	402.56 KiB	379.72 KiB
d3630c3	22.84 KiB	403.19 KiB	380.34 KiB
de033da	21.58 KiB	418.15 KiB	396.57 KiB
f278bab	22.31 KiB	760.65 KiB	738.33 KiB
369222e	20.76 KiB	419.67 KiB	398.91 KiB