Code generation for GRPC for the name "result" is incorrect

[epicarchitect]

To Reproduce
Steps to reproduce the behavior:

1. Kotlin version: 2.3.20
2. Gradle version: 9.4.0
3. kotlinx-rpc version: 0.11.0-grpc-185
4. OS (Or at least KMP platform): KMP
5. Minimal reproducer in code:
   Connect org.jetbrains.kotlinx.rpc.plugin and add minimal configuration:

rpc {
    protoc()
}

Add a proto file with the following contents in commonMain/proto:

syntax = "proto3";

message SubmitAuthResponse {
  string submit_result = 1;

  oneof result {
    string finished = 101;
    int64 next_challenge = 102;
  }
}

5. Error description after compilation:
   Unresolved reference. None of the following candidates is applicable because of a receiver type mismatch:
   fun SubmitAuthResponse.Result.oneOfHashCode(): Int

6. Generated code:

class SubmitAuthResponseInternal: SubmitAuthResponse.Builder, InternalMessage(fieldsWithPresence = 0) {
 ...
    override var submitResult: String by MsgFieldDelegate { "" }
    override var result: SubmitAuthResponse.Result? = null

    override fun hashCode(): Int {
        checkRequiredFields()
        var result = submitResult.hashCode()
        result = 31 * result + (result?.oneOfHashCode() ?: 0) // error here
        return result
    }

7. Expected generated code:

class SubmitAuthResponseInternal: SubmitAuthResponse.Builder, InternalMessage(fieldsWithPresence = 0) {
 ...
    override var submitResult: String by MsgFieldDelegate { "" }
    override var result: SubmitAuthResponse.Result? = null

    override fun hashCode(): Int {
        checkRequiredFields()
        var result = submitResult.hashCode()
        result = 31 * result + (this.result?.oneOfHashCode() ?: 0) // used this.result
        return result
    }

In other words, the problem is that the generated code needs to refer to objects more precisely. I think it's worth using this throughout the generated code to avoid such cases.