Metadata Populator: use char[] instead of absl::string_view for metadata buffer name constant.

PiperOrigin-RevId: 370854340
diff --git a/tensorflow_lite_support/metadata/cc/metadata_populator.cc b/tensorflow_lite_support/metadata/cc/metadata_populator.cc
index 457da54..e21d426 100644
--- a/tensorflow_lite_support/metadata/cc/metadata_populator.cc
+++ b/tensorflow_lite_support/metadata/cc/metadata_populator.cc
@@ -33,7 +33,7 @@
 namespace metadata {
 
 namespace {
-constexpr absl::string_view kMetadataBufferName = "TFLITE_METADATA";
+constexpr char kMetadataBufferName[] = "TFLITE_METADATA";
 
 using ::absl::StatusCode;
 using ::tflite::support::CreateStatusWithPayload;