hidl-gen: add sanitizedName to emitReaderWriterEmbedded.

* Fix weird variable names in autogenerated code for vec<vec<T>>.

Bug: 31955917

Test: hidl_test
Change-Id: I83363a6d12babae1aba8e118451e1ec80492012c
diff --git a/VectorType.h b/VectorType.h
index 7627509..0e0a07c 100644
--- a/VectorType.h
+++ b/VectorType.h
@@ -47,6 +47,7 @@
             Formatter &out,
             size_t depth,
             const std::string &name,
+            const std::string &sanitizedName,
             bool nameIsPointer,
             const std::string &parcelObj,
             bool parcelObjIsPointer,