[webview_flutter] Platform implementations for getCookies #11037

[khaled-0]

List which issues are fixed by this PR. You must list at least one issue.
#10833 #11037

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[gemini-code-assist]

Code Review

This pull request implements the getCookies method for PlatformWebViewCookieManager in both the Android and WKWebView packages. The changes include updated Pigeon definitions, native implementations for cookie retrieval, and updates to the example application to utilize the new API. Feedback identifies a bug in Android cookie parsing when values contain equals signs, incorrect domain matching logic in the WKWebView implementation that violates RFC 6265, and a missing nullability annotation in the Android native code. Typographical errors in the changelogs were also noted.

[gemini-code-assist]

The current cookie parsing logic is incorrect if a cookie's value contains an equals sign (=). Using cookie.split('=') and taking cookieValue.last will only capture the part of the value after the last =.

To correctly parse the cookie, you should take everything after the first = as the value.

Suggested change

	final List<String> cookieValue = cookie.split('=');
	webViewCookies.add(
	WebViewCookie(
	name: cookieValue.first,
	value: cookieValue.last,
	domain: url.toString(),
	),
	);
	final List<String> cookieParts = cookie.split('=');
	webViewCookies.add(
	WebViewCookie(
	name: cookieParts.first,
	value: cookieParts.skip(1).join('='),
	domain: url.toString(),
	),
	);