Update WebKit tests for the unified HTTP stack

https://bugs.webkit.org/show_bug.cgi?id=273806

Reviewed by Alex Christensen and Alexey Proskuryakov.

Fixing 2 tests that fails on the unified HTTP stack.

* LayoutTests/imported/w3c/web-platform-tests/websockets/handlers/sleep_10_v13_wsh.py:
(web_socket_do_extra_handshake): Fixing imported/w3c/web-platform-tests/websockets/interfaces/WebSocket/close/close-connecting.html?wss, import upstream WPT changes.
* Tools/TestWebKitAPI/Tests/WebKitCocoa/Download.mm:
(TestWebKitAPI::ResumeWithExtraInitialDataOnDisk)): Fixing TestWebKitAPI.WKDownload.ResumeWithExtraInitialDataOnDisk, the new stack uses the actual file size on disk to determine where to resume the download.

Canonical link: https://commits.webkit.org/278771@main

LayoutTests/imported/w3c/web-platform-tests/websockets/handlers/sleep_10_v13_wsh.py

@@ -4,16 +4,7 @@
 from mod_pywebsocket import msgutil
 
 def web_socket_do_extra_handshake(request):
-    request.connection.write(b'x')
-    time.sleep(2)
-    request.connection.write(b'x')
-    time.sleep(2)
-    request.connection.write(b'x')
-    time.sleep(2)
-    request.connection.write(b'x')
-    time.sleep(2)
-    request.connection.write(b'x')
-    time.sleep(2)
+    time.sleep(10)
     return
 
 def web_socket_transfer_data(request):

Tools/TestWebKitAPI/Tests/WebKitCocoa/Download.mm

@@ -1939,10 +1939,10 @@ HTTPServer server([connectionCount = 0](TestWebKitAPI::Connection connection) mu
         NSError *error = nil;
         [[NSFileManager defaultManager] removeItemAtURL:expectedDownloadFile error:&error];
         EXPECT_NULL(error);
-        EXPECT_TRUE([[(NSString *)makeString(longString<3000>('b'), longString<3000>('c')) dataUsingEncoding:NSUTF8StringEncoding] writeToURL:expectedDownloadFile atomically:YES]);
+        EXPECT_TRUE([[(NSString *)makeString(longString<3000>('b'), longString<2000>('c')) dataUsingEncoding:NSUTF8StringEncoding] writeToURL:expectedDownloadFile atomically:YES]);
     });
 
-    checkFileContents(expectedDownloadFile, makeString(longString<3000>('b'), longString<3000>('c'), longString<5000>('d')));
+    checkFileContents(expectedDownloadFile, makeString(longString<3000>('b'), longString<2000>('c'), longString<5000>('d')));
 }
 
 TEST(WKDownload, ResumeWithInvalidResumeData)