feat: maskWebView option and accesibilityIdentifier support

[abelonogov-ld]

• maskWebView option
• accesibilityIdentifier support in masking
• samples of WKWebView and Storyboards

---

Note

Adds maskWebViews privacy option and accessibility identifier-based masking; updates masking logic; and introduces WebView/Storyboard samples with docs updates.

• Session Replay SDK:
  • Privacy options: Add privacy.maskWebViews (default false) to SessionReplayOptions.PrivacyOptions.
  • Masking logic (MaskCollector):
    • Import WebKit and mask WKWebView/UIWebView when maskWebViews is enabled.
    • Honor explicit unmasking and ignoreAccessibilityIdentifiers; mask when maskAccessibilityIdentifiers matches.
    • Adjust text input masking to avoid masking WKContentView; simplify image masking to always mask when enabled.
• Docs:
  • Document maskWebViews in README privacy options and configuration examples.
• TestApp:
  • Update config: include maskWebViews and extend maskAccessibilityIdentifiers.
  • UI: add toggles and sheets for StoryboardRootView and WebViewControllertView; minor button/layout tweaks; add "Simulate System Under Pressure" navigation link.
  • Credit card sample: unmask nameField; set brandChip accessibility identifier.
  • Add new files: StoryboardRootView, StoryboardiOS.storyboard, StoryboardiOSViewController, WebViewController (+ SwiftUI wrapper).

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