Do not set the exception group marker when there is a suppressed exception

[adinauer]

📜 Description

Do not set the exception group marker ("is_exception_group": true,) when there is a suppressed exception.

💡 Motivation and Context

Fixes #4054 but also removes the list of exceptions from the top of the issue detail page. We can fix that at a later point.

💚 How did you test it?

📝 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.

🔮 Next steps

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	408.14 ms	461.46 ms	53.32 ms
Size	1.65 MiB	2.31 MiB	677.53 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
00c8eeb	415.32 ms	428.08 ms	12.76 ms

App size

Revision	Plain	With Sentry	Diff
00c8eeb	1.70 MiB	2.36 MiB	671.98 KiB

Previous results on branch: fix/grouping-for-suppressed-exceptions-no-group-flag

Startup times

Revision	Plain	With Sentry	Diff
feafa76	483.84 ms	545.07 ms	61.22 ms

App size

Revision	Plain	With Sentry	Diff
feafa76	1.65 MiB	2.31 MiB	677.53 KiB

[lbloder]

LGTM 👍