experiment: mask CustomPaint widget

[vaind]

📜 Description

Masking CustomPaint which is used to render custom graphics. The problem with the solution in this PR is that this widget is used for builtin widgets too, such us buttons, ...

As such, I don't think we can reliably filter out only user-defined CustomPaint widgets. Therefore, users should add custom masking using #2324

💡 Motivation and Context

Part of #1193 (comment)

💚 How did you test it?

📝 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
• I updated the docs if needed
• All tests passing
• No breaking changes

🔮 Next steps

[github-actions]

	Fails
🚫	Please consider adding a changelog entry for the next release.

Instructions and example for changelog

Please add an entry to CHANGELOG.md to the "Unreleased" section. Make sure the entry includes this PR's number.

Example:

## Unreleased

- mask CustomPaint widget ([#2346](https://github.com/getsentry/sentry-dart/pull/2346))

If none of the above apply, you can opt out of this check by adding #skip-changelog to the PR description.

Generated by 🚫 dangerJS against de2b3df

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.31%. Comparing base (e239c83) to head (de2b3df).
Report is 4 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (e239c83) and HEAD (de2b3df). Click for more details.

HEAD has 7 uploads less than BASE

Flag	BASE (e239c83)	HEAD (de2b3df)
	9	2

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2346       +/-   ##
===========================================
- Coverage   84.77%   63.31%   -21.47%     
===========================================
  Files         253        4      -249     
  Lines        9060      169     -8891     
===========================================
- Hits         7681      107     -7574     
+ Misses       1379       62     -1317     

☔ View full report in Codecov by Sentry.
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[github-actions]

Android Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	457.90 ms	509.27 ms	51.37 ms
Size	6.49 MiB	7.56 MiB	1.07 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
0aaa46e	313.39 ms	373.23 ms	59.85 ms
4656f10	626.98 ms	693.36 ms	66.38 ms
2d74010	400.42 ms	466.50 ms	66.08 ms
f7f46dc	306.38 ms	363.32 ms	56.95 ms
3751dbc	486.20 ms	538.68 ms	52.48 ms
bffc2c5	348.00 ms	399.89 ms	51.89 ms
0bed04d	382.15 ms	458.33 ms	76.18 ms
cc80714	333.26 ms	388.80 ms	55.54 ms
870f5eb	329.45 ms	369.29 ms	39.84 ms
2f8f173	323.31 ms	373.29 ms	49.97 ms

App size

Revision	Plain	With Sentry	Diff
0aaa46e	6.16 MiB	7.14 MiB	1007.32 KiB
4656f10	6.33 MiB	7.30 MiB	988.47 KiB
2d74010	6.33 MiB	7.26 MiB	943.41 KiB
f7f46dc	6.06 MiB	7.03 MiB	993.54 KiB
3751dbc	6.49 MiB	7.55 MiB	1.06 MiB
bffc2c5	6.34 MiB	7.28 MiB	966.31 KiB
0bed04d	6.33 MiB	7.30 MiB	987.71 KiB
cc80714	6.34 MiB	7.28 MiB	966.31 KiB
870f5eb	5.94 MiB	6.92 MiB	1005.77 KiB
2f8f173	5.94 MiB	6.95 MiB	1.01 MiB

[github-actions]

iOS Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1243.35 ms	1263.98 ms	20.63 ms
Size	8.38 MiB	9.74 MiB	1.36 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
5f2f77b	1231.76 ms	1248.43 ms	16.67 ms
a510d1d	1277.04 ms	1291.57 ms	14.53 ms
3751dbc	1261.45 ms	1287.79 ms	26.34 ms
8a111a9	1251.49 ms	1270.77 ms	19.28 ms
f25f207	1233.44 ms	1260.73 ms	27.30 ms
04bd9e6	1230.78 ms	1250.71 ms	19.94 ms
633cf2e	1257.96 ms	1275.73 ms	17.77 ms
d783424	1265.71 ms	1277.00 ms	11.29 ms
e3ef570	1220.08 ms	1239.66 ms	19.58 ms
f9d18f3	1240.20 ms	1242.78 ms	2.57 ms

App size

Revision	Plain	With Sentry	Diff
5f2f77b	8.33 MiB	9.64 MiB	1.31 MiB
a510d1d	8.16 MiB	9.17 MiB	1.01 MiB
3751dbc	8.38 MiB	9.73 MiB	1.35 MiB
8a111a9	8.38 MiB	9.74 MiB	1.36 MiB
f25f207	8.32 MiB	9.38 MiB	1.05 MiB
04bd9e6	8.33 MiB	9.61 MiB	1.27 MiB
633cf2e	8.15 MiB	9.12 MiB	986.26 KiB
d783424	8.29 MiB	9.38 MiB	1.09 MiB
e3ef570	8.32 MiB	9.38 MiB	1.06 MiB
f9d18f3	8.29 MiB	9.36 MiB	1.07 MiB