feat: enhance SentryUIRedactBuilder to support redaction of CALayer sublayers in iOS 26+

[itaybre]

📜 Description

Add's SwiftUI layers for text and images to automatically redact content on iOS 26

💡 Motivation and Context

iOS 26 only uses layers for rendering SwiftUI content, thus our old logic broke and stopped masking text and images.

Fixes: #6390

💚 How did you test it?

Used our SwiftUI app with .sentryReplayPreviewMask(opacity: 0.5)

Example iOS 18 vs iOS 26

📝 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

🟡 Minor (new features)

📋 Changelog Preview

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

---

New Features ✨

• Enhance SentryUIRedactBuilder to support redaction of CALayer sublayers in iOS 26+ by itaybre in #7781

Internal Changes 🔧

Deps

• Bump mikepenz/action-junit-report from 6.3.1 to 6.4.0 by dependabot in #7773
• Bump ruby/setup-ruby from 1.298.0 to 1.299.0 by dependabot in #7772
• Bump fastlane-plugin-sentry from 2.5.0 to 2.5.1 by dependabot in #7771

---

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

[github-actions]

	Fails
🚫	Please consider adding a changelog entry for the next release.

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Instructions and example for changelog

Please add an entry to CHANGELOG.md to the "Unreleased" section. Make sure the entry includes this PR's number.

Example:

## Unreleased

### Features

- enhance SentryUIRedactBuilder to support redaction of CALayer sublayers in iOS 26+ ([#7781](https://github.com/getsentry/sentry-cocoa/pull/7781))

If none of the above apply, you can opt out of this check by adding #skip-changelog to the PR description or adding a skip-changelog label.

Generated by 🚫 dangerJS against 1844107

[codecov]

❌ 2 Tests Failed:

Tests completed	Failed	Passed	Skipped
4545	2	4543	25

View the top 2 failed test(s) by shortest run time

SentryTests.SentryLayerRedactionTests::testRedact_layerOnlySublayer_producesRedactType_notRedactSwiftUI

Stack Traces | 0s run time

.../SentryTests/ViewCapture/SentryUIRedactBuilderTests+SwiftUI.swift:177 - XCTAssertEqual failed: ("0") is not equal to ("1") - Layer-only sublayers should produce .redact regions

SentryTests.SentryLayerRedactionTests::testRedact_layerOnlySublayer_shouldRedact

Stack Traces | 0s run time

.../SentryTests/ViewCapture/SentryUIRedactBuilderTests+SwiftUI.swift:112 - XCTAssertEqual failed: ("0") is not equal to ("1")

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