fix(android): set all cookies on proxied requests (#5781)

Author: tlancina

android/capacitor/src/main/java/com/getcapacitor/WebViewLocalServer.java

@@ -29,6 +29,7 @@
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 /**
@@ -360,9 +361,12 @@ private WebResourceResponse handleProxyRequest(WebResourceRequest request, PathH
                         String base64 = Base64.encodeToString(userInfoBytes, Base64.NO_WRAP);
                         conn.setRequestProperty("Authorization", "Basic " + base64);
                     }
-                    String cookie = conn.getHeaderField("Set-Cookie");
-                    if (cookie != null) {
-                        CookieManager.getInstance().setCookie(url, cookie);
+
+                    List<String> cookies = conn.getHeaderFields().get("Set-Cookie");
+                    if (cookies != null) {
+                        for (String cookie : cookies) {
+                            CookieManager.getInstance().setCookie(url, cookie);
+                        }
                     }
                     InputStream responseStream = conn.getInputStream();
                     responseStream = jsInjector.getInjectedStream(responseStream);