fix: WKWebView Logging Crash

[BrandonStalnaker]

Background

• A crash was reported on the main thread in MParticleWebView.evaluateAgent() during user-agent collection via WKWebView.evaluateJavaScript. The stack trace showed the crash in objc_opt_respondsToSelector during string formatting inside MPLog.MPLogger (MParticleWebView.swift:80), with WebKit’s web process terminating and completion handlers running during shutdown. The failure occurred when the logging code treated a format argument as an object (for %@) and invoked a selector on it.

What Has Changed

• MParticleWebView.swift (line 80): The retry-count log now uses the integer format specifier %d instead of %@. The value is an Int (self.retryCount); using %@ caused the format machinery to treat it as an object and led to the crash. Using %d formats the integer safely and removes this crash.

Checklist

• I have performed a self-review of my own code.
• I have tested this locally.

Reference Issue (For employees only. Ignore if you are an outside contributor)

• Closes https://go/j/[SDKE-1114]

[github-actions]

📦 SDK Size Impact Report

Measures how much the SDK adds to an app's size (with-SDK minus without-SDK).

Metric	Target Branch	This PR	Change
App Bundle Impact	1.82 MB	1.82 MB	+N/A
Executable Impact	896 bytes	896 bytes	+N/A
XCFramework Size	9.49 MB	9.48 MB	-4 KB

➡️ SDK size impact change is minimal.

Raw measurements

Target branch (main):

{"baseline_app_size_kb":84,"baseline_executable_size_bytes":75464,"with_sdk_app_size_kb":1944,"with_sdk_executable_size_bytes":76360,"sdk_impact_kb":1860,"sdk_executable_impact_bytes":896,"xcframework_size_kb":9716}

This PR:

{"baseline_app_size_kb":84,"baseline_executable_size_bytes":75464,"with_sdk_app_size_kb":1944,"with_sdk_executable_size_bytes":76360,"sdk_impact_kb":1860,"sdk_executable_impact_bytes":896,"xcframework_size_kb":9712}

[denischilik]

Just small nit

[denischilik]

LGTM