Fail with error when a field is identically named as the options static field

Consider the following proto definition:

message Testing {
  optional string field = 1 [(squareup.someOption) = 123];
  optional string FIELD_OPTIONS_FIELD = 2;
}

This will generate a Java class containing the following incorrect code:

  public static final FieldOptions FIELD_OPTIONS_FIELD = new FieldOptions.Builder()
      .someOption(123)
      .build();
  ....
  @WireField(
      tag = 2,
      adapter = "com.squareup.wire.ProtoAdapter#STRING"
  )
  public final String FIELD_OPTIONS_FIELD;

Reproduce the issue from the provided proto definition and inspect the generated Java class, focusing on the collision between the static FIELD_OPTIONS_FIELD member and the generated message field. Confirm that the generated class no longer declares conflicting members and remains compilable.