[sdk-platform-java] Generator is not generating all the root level resources in the proto files

See [this](yaqs/4937742893109477376#n15) and the earlier comments in the thread for more context.

Given two top level resources added to the proto file:
```
option (google.api.resource_definition) = {
type: "service.googleapis.com/FolderLocation"
pattern: "folders/{folder}/locations/{location}"
};

option (google.api.resource_definition) = {
type: "service.googleapis.com/OrganizationLocation"
pattern: "organizations/{organization}/locations/{location}"
};
```
It seems to only generate a resource for FolderLocation as `FolderLocationName`.

These resource definitions are the parent to a child resource:
```
message ChildResource {
option (google.api.resource) = {
type: "service.googleapis.com/ChildResource"
pattern: "organizations/{organization}/locations/{location}/things/{thing}"
pattern: "folders/{folder}/locations/{location}/things/{thing}"
plural: "childResource"
singular: "childResource"
};
}
```

These should map properly to the the two top level resource definitions, but it only seems to map to one.

We need to investigate why only one of these resources is being created.