[lldb] Update use of swift::ser::validateSerializedAST to new API

The Swift service validateSerializedAST now accepts the name of the
client SDK to limit loading only swiftmodules built with the same SDK.
This prevents loading swiftmodules built with an incompatible SDK where
the context is different enough that it can lead to hard compiler
crashes.

In this use site, loading the swiftmodule from a binary should be safe
as the SDK context will be extracted from that swiftmodule. Other
imports will use regular loading path and apply the expected
restriction.

Swift API change: swiftlang/swift#58935

Author: xymus

lldb/source/Plugins/TypeSystem/Swift/SwiftASTContext.cpp

@@ -1346,7 +1346,8 @@ static bool DeserializeAllCompilerFlags(swift::CompilerInvocation &invocation,
     for (; !buf.empty(); buf = buf.substr(info.bytes)) {
       swift::serialization::ExtendedValidationInfo extended_validation_info;
       info = swift::serialization::validateSerializedAST(
-          buf, invocation.getSILOptions().EnableOSSAModules, &extended_validation_info);
+          buf, invocation.getSILOptions().EnableOSSAModules,
+          /*requiredSDK*/StringRef(), &extended_validation_info);
       bool invalid_ast = info.status != swift::serialization::Status::Valid;
       bool invalid_size = (info.bytes == 0) || (info.bytes > buf.size());
       bool invalid_name = info.name.empty();