[Performance issues] use grpc metadata FromOutgoingContext function

[AtlanCI]

Background

grpc version 1.39 and 1.37
Package Link:
https://github.com/open-telemetry/opentelemetry-go-contrib/blob/main/instrumentation/google.golang.org/grpc/otelgrpc/interceptor.go

StreamClientInterceptor and UnaryClientInterceptor

Proposed Solution

The fromoutgoingcontext implementation in grpc versions 1.39 and 1.37 is different. In 1.37, it parses CTX using the join function. Whether the appendtooutgoingcontext function should be used in opentelemetry.

[AtlanCI]

Replace with this function fromoutgoingcontext