Fix CodeSign error caused by Product Dependencies phase

https://bugs.webkit.org/show_bug.cgi?id=241713

Unreviewed build fix.

Product Dependencies phases must be set to the "Products Directory"
destination. Otherwise, they unintentionally embed the dependencies into
their target's build product. This one must have been a default setting
that got overlooked.

* Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj:

Canonical link: https://commits.webkit.org/251760@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@295755 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj

@@ -1721,7 +1721,7 @@
 			isa = PBXCopyFilesBuildPhase;
 			buildActionMask = 2147483647;
 			dstPath = "";
-			dstSubfolderSpec = 7;
+			dstSubfolderSpec = 16;
 			files = (
 				DD42949F284BE0B7004D49ED /* WebKit.framework in Product Dependencies */,
 			);