fix: Normalize profiling cpu usage to percent

[denrase]

📜 Description

Fix SentrySystemWrapper CPU usage calculation by dividing Mach thread cpu_usage by TH_USAGE_SCALE, then normalizing by processor count and converting to 0..100 percent. Updates docs and adds test for the normalization logic.

💡 Motivation and Context

Closes #7456

💚 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.

[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 🐛

• Normalize profiling cpu usage to percent by denrase in #7798

• Detect development builds via provisioning profile entitlement by denrase in #7702

Internal Changes 🔧

Deps

• Bump actions/upload-pages-artifact from 4.0.0 to 5.0.0 by dependabot in #7789
• Bump actions/github-script from 8.0.0 to 9.0.0 by dependabot in #7793

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

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.411%. Comparing base (6ea2191) to head (f1a16e3).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #7798       +/-   ##
=============================================
- Coverage   85.416%   85.411%   -0.005%     
=============================================
  Files          487       487               
  Lines        29190     29195        +5     
  Branches     12625     12652       +27     
=============================================
+ Hits         24933     24936        +3     
- Misses        4207      4210        +3     
+ Partials        50        49        -1     

Files with missing lines	Coverage Δ
Sources/Sentry/SentrySystemWrapper.mm	67.532% <100.000%> (+1.779%)	⬆️

... and 5 files with indirect coverage changes

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[sentry]

📲 Install Builds

iOS

🔗 App Name	App ID	Version	Configuration
SDK-Size	io.sentry.sample.SDK-Size	9.10.0 (1)	Release

⚙️ sentry-cocoa Build Distribution Settings

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1212.11 ms	1250.90 ms	38.79 ms
Size	24.14 KiB	1.13 MiB	1.11 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
21fb20e	1217.43 ms	1230.91 ms	13.48 ms
16b3235	1234.51 ms	1257.84 ms	23.33 ms
fd24b7c	1222.39 ms	1259.67 ms	37.28 ms
d6d7fcf	1192.78 ms	1215.60 ms	22.83 ms
d0b4402	1218.62 ms	1241.80 ms	23.18 ms
db9e223	1193.69 ms	1213.56 ms	19.87 ms
e92ab66	1228.86 ms	1258.43 ms	29.57 ms
bed2eb7	1215.88 ms	1247.14 ms	31.27 ms
06cf46a	1222.49 ms	1261.13 ms	38.64 ms
09a80f2	1214.78 ms	1237.85 ms	23.07 ms

App size

Revision	Plain	With Sentry	Diff
21fb20e	24.14 KiB	1.12 MiB	1.09 MiB
16b3235	24.14 KiB	1.11 MiB	1.09 MiB
fd24b7c	24.14 KiB	1.07 MiB	1.04 MiB
d6d7fcf	24.14 KiB	1.12 MiB	1.10 MiB
d0b4402	24.14 KiB	1.11 MiB	1.08 MiB
db9e223	24.14 KiB	1.06 MiB	1.03 MiB
e92ab66	24.14 KiB	1.10 MiB	1.08 MiB
bed2eb7	24.14 KiB	1.07 MiB	1.04 MiB
06cf46a	24.14 KiB	1.13 MiB	1.10 MiB
09a80f2	24.14 KiB	1.10 MiB	1.08 MiB