Prevent recursion on WKWebViewSetNativationDelegateSwizzler

[ArielDemarco]

Problem

When a WKWebView sets a navigationDelegate, our WKWebViewSetNavigationDelegateSwizzler sets our WKNavigationDelegateProxy as the delegate while retaining a reference to the original delegate to forward messages.
However, if a proxy is manually set for some reason, this setup could result in recursion.

Solution

Ensure that we do not set ourselves as the navigationDelegate multiple times to prevent recursion.

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details

Scanned Manifest Files

[github-actions]

	Warnings
⚠️	No CHANGELOG entry added.

Generated by 🚫 Danger Swift against d9b85e7

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.66%. Comparing base (b17b00d) to head (d9b85e7).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #26      +/-   ##
==========================================
- Coverage   91.66%   91.66%   -0.01%     
==========================================
  Files         386      384       -2     
  Lines       18169    18102      -67     
==========================================
- Hits        16655    16593      -62     
+ Misses       1514     1509       -5     

Files	Coverage Δ
...ceCore/Capture/WebView/WebViewCaptureService.swift	82.60% <100.00%> (+0.58%)	⬆️
...s/Capture/WebView/WebViewCaptureServiceTests.swift	100.00% <100.00%> (ø)

... and 5 files with indirect coverage changes