grpc-managed-channel sender ignores exporter RetryPolicy

Is your feature request related to a problem? Please describe.
We use opentelemetry-java in our platform and since https://github.com/open-telemetry/opentelemetry-java/pull/2995 all the services that start before the opentelemetry collector generate an ERROR log because the collector is not available yet:
https://github.com/open-telemetry/opentelemetry-java/blob/main/exporters/otlp/all/src/main/java/io/opentelemetry/exporter/otlp/internal/GrpcExporter.java#L100

Describe the solution you'd like

Describe alternatives you've considered

Additional context
We're using opentelemetry-java 1.63.0

まず exporters/otlp/all/src/main/java/io/opentelemetry/exporter/otlp/internal/GrpcExporter.java の100行目付近から始め、grpc-managed-channel sender が exporter の RetryPolicy をどのように処理するかを追跡します。collector が利用できない場合に期待される動作を定義し、RetryPolicy の動作を正しく保ったまま、起動時に ERROR ログが出力されなくなっていることを確認します。