[BUG] AddAzureMonitorTraceExporter ignores sampling

[bklooste]

Library name and version

Azure.Monitor.OpenTelemtry.Exporter 1.3

Describe the bug

As we are getting more into open telemtry and trying to cut our logging costs we noted that sampling is broken

eg for http we want the sampling to be based on the span header however for EventHubs and Redis where there is no span we want to use TraceIdRatioBasedSampler

AddAzureMonitorTraceExporter ignores changes this. How do we do this ?

Expected behavior

The actual sampler is used

Actual behavior

The sampler is ignored

Reproduction Steps

var traceBuilder2 = Sdk.CreateTracerProviderBuilder()
               .SetResourceBuilder(resourceBuilder)
               .SetSampler(new TraceIdRatioBasedSampler(0.02))
               .AddAzureMonitorTraceExporter(options =>
               {
                   options.ConnectionString = connString;
                   options.SamplingRatio = 0.05f;
               })
           .AddRedisInstrumentation(redisCon, options => options.EnrichActivityWithTimingEvents = false)

Environment

No response