chore: Rename CARTHAGE macro to XCODE

[itaybre]

In sync with #6926, since we no longer plan to use Carthage, I am renaming the precompiler flags to XCODE, to avoid confussions.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 85.061%. Comparing base (532f33c) to head (2147614).
⚠️ Report is 4 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
Sources/Swift/Helper/SentrySdkPackage.swift	0.000%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #6929       +/-   ##
=============================================
+ Coverage   84.913%   85.061%   +0.148%     
=============================================
  Files          453       453               
  Lines        27628     27634        +6     
  Branches     12133     12141        +8     
=============================================
+ Hits         23460     23506       +46     
+ Misses        4123      4080       -43     
- Partials        45        48        +3     

Files with missing lines	Coverage Δ
...entrySwiftUI/Preview/SentryReplayMaskPreview.swift	0.000% <ø> (ø)
...wiftUI/Preview/SentryReplayMaskPreviewUIView.swift	0.000% <ø> (ø)
Sources/SentrySwiftUI/SentryReplayView.swift	33.333% <ø> (ø)
Sources/SentrySwiftUI/SentryTracedView.swift	72.222% <ø> (ø)
Sources/Swift/Helper/SentrySdkPackage.swift	90.476% <0.000%> (-4.979%)	⬇️

... and 18 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 532f33c...2147614. Read the comment docs.

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1225.26 ms	1252.87 ms	27.61 ms
Size	24.14 KiB	1.01 MiB	1015.20 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
0ee162c	1226.90 ms	1261.72 ms	34.83 ms
7f26f16	1220.62 ms	1255.04 ms	34.42 ms
5290541	1216.38 ms	1249.56 ms	33.18 ms
319fb1e	1219.48 ms	1242.69 ms	23.21 ms
0f410ad	1193.34 ms	1255.49 ms	62.15 ms
b6f8eb3	1217.94 ms	1246.57 ms	28.63 ms
e8f9a1d	1229.02 ms	1264.17 ms	35.15 ms
37238de	1236.00 ms	1267.80 ms	31.80 ms
0ecea77	1191.47 ms	1216.12 ms	24.65 ms
1655116	1220.72 ms	1260.58 ms	39.85 ms

App size

Revision	Plain	With Sentry	Diff
0ee162c	23.75 KiB	933.33 KiB	909.58 KiB
7f26f16	23.75 KiB	1.02 MiB	1016.66 KiB
5290541	24.14 KiB	1.01 MiB	1015.38 KiB
319fb1e	23.75 KiB	1019.18 KiB	995.43 KiB
0f410ad	24.14 KiB	1.01 MiB	1014.82 KiB
b6f8eb3	23.75 KiB	988.70 KiB	964.95 KiB
e8f9a1d	23.75 KiB	969.78 KiB	946.04 KiB
37238de	23.75 KiB	963.18 KiB	939.43 KiB
0ecea77	24.15 KiB	1.01 MiB	1014.90 KiB
1655116	23.75 KiB	1023.84 KiB	1000.10 KiB

[philipphofmann]

LGTM