Fix mapping of well-known types when compiling a FileDescriptionSet

Respect the recently added `Builder::with_extended_rust_types` when
compiling a `FileDescriptionSet` via e.g. `Builder::compile_fds` or
`Builder::compile_fds_with_config`. When `with_extended_rust_types` was
added, only the code paths compiling .proto files from source were
updated to include the extended mappings of well-known types.

Author: MarkusPettersson98

tonic-prost-build/src/lib.rs

@@ -863,6 +863,10 @@ impl Builder {
             config.include_file(path);
         }
 
+        if self.with_extended_rust_types {
+            NON_PATH_TYPE_ALLOWLIST.set(EXTENDED_NON_PATH_TYPE_ALLOWLIST);
+        }
+
         // Note: We don't pass self.disable_comments to prost Config here
         // because those are meant for service/method paths which are handled
         // by the ServiceGenerator, not for message paths