[v9] Set sentry-native backend to crashpad by default and breakpad for windows arm64

[buenaflor]

📜 Description

Change default backends for windows & linux

• Default values are in the windows & linux cmakelists -> crashpad for linux & windows and breakpad for windows arm64
• Backends set by env var take precedence so users can change them

💡 Motivation and Context

Closes #2641

💚 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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.73%. Comparing base (98f7055) to head (a6d128c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2791      +/-   ##
==========================================
+ Coverage   88.60%   89.73%   +1.13%     
==========================================
  Files         263       91     -172     
  Lines        8766     2953    -5813     
==========================================
- Hits         7767     2650    -5117     
+ Misses        999      303     -696     

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[buenaflor]

cc @JoshuaMoelans for visibility

[github-actions]

Android Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	457.57 ms	567.10 ms	109.53 ms
Size	6.44 MiB	7.56 MiB	1.12 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
68677de	364.41 ms	415.61 ms	51.20 ms
8e133ad	360.08 ms	402.82 ms	42.74 ms
9a5040f	490.15 ms	563.98 ms	73.83 ms
6aab859	306.27 ms	377.92 ms	71.65 ms
752e1cb	472.85 ms	511.60 ms	38.76 ms
2e1e4ae	413.34 ms	509.24 ms	95.90 ms
0db91cc	327.85 ms	387.31 ms	59.46 ms
84bc635	395.57 ms	464.23 ms	68.66 ms
134c9f8	301.40 ms	352.65 ms	51.26 ms
c328ffc	394.35 ms	480.94 ms	86.59 ms

App size

Revision	Plain	With Sentry	Diff
68677de	6.06 MiB	7.10 MiB	1.04 MiB
8e133ad	6.06 MiB	7.03 MiB	990.29 KiB
9a5040f	6.46 MiB	7.48 MiB	1.01 MiB
6aab859	6.15 MiB	7.13 MiB	999.97 KiB
752e1cb	6.49 MiB	7.57 MiB	1.08 MiB
2e1e4ae	6.35 MiB	7.42 MiB	1.06 MiB
0db91cc	5.94 MiB	6.95 MiB	1.01 MiB
84bc635	6.34 MiB	7.28 MiB	968.41 KiB
134c9f8	5.94 MiB	6.95 MiB	1.01 MiB
c328ffc	6.35 MiB	7.42 MiB	1.07 MiB

Previous results on branch: native-backend

Startup times

Revision	Plain	With Sentry	Diff
5a705f1	511.57 ms	563.77 ms	52.20 ms

App size

Revision	Plain	With Sentry	Diff
5a705f1	6.44 MiB	7.56 MiB	1.12 MiB

[github-actions]

iOS Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1253.15 ms	1280.47 ms	27.32 ms
Size	8.43 MiB	9.98 MiB	1.55 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
abfcdb5	1230.87 ms	1244.94 ms	14.06 ms
4d046e0	1243.08 ms	1255.98 ms	12.90 ms
0ceb89c	1252.02 ms	1271.78 ms	19.75 ms
f4cc744	1274.57 ms	1290.79 ms	16.22 ms
c73ab67	1267.73 ms	1279.36 ms	11.63 ms
dd25e43	1261.59 ms	1275.81 ms	14.22 ms
2e93bab	1237.08 ms	1258.41 ms	21.33 ms
ee0ca56	1236.44 ms	1258.89 ms	22.45 ms
bd75526	1252.62 ms	1287.00 ms	34.38 ms
178baee	1230.61 ms	1249.94 ms	19.33 ms

App size

Revision	Plain	With Sentry	Diff
abfcdb5	8.33 MiB	9.64 MiB	1.31 MiB
4d046e0	8.42 MiB	9.83 MiB	1.40 MiB
0ceb89c	8.15 MiB	9.12 MiB	989.78 KiB
f4cc744	8.16 MiB	9.16 MiB	1.01 MiB
c73ab67	8.29 MiB	9.36 MiB	1.07 MiB
dd25e43	8.42 MiB	9.87 MiB	1.44 MiB
2e93bab	8.38 MiB	9.73 MiB	1.36 MiB
ee0ca56	8.32 MiB	9.52 MiB	1.20 MiB
bd75526	8.38 MiB	9.76 MiB	1.39 MiB
178baee	8.34 MiB	9.67 MiB	1.33 MiB

Previous results on branch: native-backend

Startup times

Revision	Plain	With Sentry	Diff
5a705f1	1274.02 ms	1285.68 ms	11.66 ms

App size

Revision	Plain	With Sentry	Diff
5a705f1	8.43 MiB	9.98 MiB	1.55 MiB