refactor: Update SentryAttribute to use a generic array type

[itaybre]

📜 Description

Replaces the array attributes type with a generic array

💡 Motivation and Context

After reviewing the developer docs, I found out that array attributes now expect array as the type.
Related:

• Docs fix: Add example of array attribute to telemetry attributes sentry-docs#15994
• Change in Sentry Native fix: update array attribute types to general 'array' string sentry-native#1479
• Relay feat(eap): Add support for native scalar arrays relay#5394

💚 How did you test it?

For now only unit tests, array attributes are not visible in Sentry UI so only 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.

Closes #7341

[github-actions]

Semver Impact of This PR

🟢 Patch (bug fixes)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).

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Bug Fixes 🐛

• In_foreground and is_active app context by philipphofmann in #7188

Internal Changes 🔧

• Update SentryAttribute to use a generic array type by itaybre in #7324

• ObjC Integration cleanup by itaybre in #7320

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_{🤖 This preview updates automatically when you update the PR.}

[codecov]

Codecov Report

❌ Patch coverage is 81.81818% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.229%. Comparing base (a1ddc79) to head (e4c295a).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
Sources/Swift/Protocol/SentryAttribute.swift	77.777%	4 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #7324       +/-   ##
=============================================
+ Coverage   85.227%   85.229%   +0.001%     
=============================================
  Files          475       475               
  Lines        28560     28557        -3     
  Branches     12410     12409        -1     
=============================================
- Hits         24341     24339        -2     
  Misses        4174      4174               
+ Partials        45        44        -1     

Files with missing lines	Coverage Δ
...ources/Swift/Protocol/SentryAttributeContent.swift	98.913% <100.000%> (ø)
Sources/Swift/Protocol/SentryAttribute.swift	94.326% <77.777%> (-0.119%)	⬇️

... and 5 files with indirect coverage changes

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[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1208.00 ms	1245.76 ms	37.76 ms
Size	24.14 KiB	1.10 MiB	1.07 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
9a34176	1227.24 ms	1266.22 ms	38.98 ms
50e7b3e	1221.54 ms	1250.81 ms	29.27 ms
015d376	1187.58 ms	1211.28 ms	23.70 ms
a7d7fb6	1209.53 ms	1235.91 ms	26.38 ms
5a4353f	1208.10 ms	1240.50 ms	32.40 ms
99e17bb	1218.50 ms	1243.91 ms	25.41 ms
41b4993	1215.15 ms	1248.14 ms	32.99 ms
1d0feed	1213.31 ms	1247.44 ms	34.14 ms
7714225	1213.24 ms	1252.28 ms	39.04 ms
58a9225	1211.40 ms	1238.88 ms	27.48 ms

App size

Revision	Plain	With Sentry	Diff
9a34176	24.14 KiB	1.10 MiB	1.07 MiB
50e7b3e	24.14 KiB	1.04 MiB	1.02 MiB
015d376	24.14 KiB	1.09 MiB	1.07 MiB
a7d7fb6	24.14 KiB	1.06 MiB	1.04 MiB
5a4353f	24.14 KiB	1.07 MiB	1.04 MiB
99e17bb	24.14 KiB	1.09 MiB	1.06 MiB
41b4993	24.14 KiB	1.06 MiB	1.04 MiB
1d0feed	24.14 KiB	1.05 MiB	1.03 MiB
7714225	24.14 KiB	1.07 MiB	1.05 MiB
58a9225	24.14 KiB	1.06 MiB	1.04 MiB

Previous results on branch: itay/update_attributes_type

Startup times

Revision	Plain	With Sentry	Diff
ce8685b	1219.83 ms	1253.89 ms	34.06 ms

App size

Revision	Plain	With Sentry	Diff
ce8685b	24.14 KiB	1.10 MiB	1.07 MiB