Distinguish between direct and transitive information when creating the CcInfo for a swift_library.

This ensures that, for a `swift_library` target `t`, reading from either the direct fields of `t[CcInfo].compilation_context` or `t[SwiftInfo].direct_modules[...].clang.compilation_context` produces consistent results.

PiperOrigin-RevId: 363418185

Author: allevato

swift/internal/utils.bzl

@@ -126,7 +126,10 @@ def create_cc_info(
             linking_context = full_private_cc_info.linking_context,
         ))
 
-    return cc_common.merge_cc_infos(cc_infos = local_cc_infos + cc_infos)
+    return cc_common.merge_cc_infos(
+        cc_infos = cc_infos,
+        direct_cc_infos = local_cc_infos,
+    )
 
 def expand_locations(ctx, values, targets = []):
     """Expands the `$(location)` placeholders in each of the given values.