sdk: try to make test_batch_span_processor_reset_timeout a bit less flaky (#3937)

If the BatchSpanProcessor has not processed its queue test will fail
with:
 UnboundLocalError: local variable 'after_calls' referenced before assignment
So double the sleep to more than the schedule_delay_millis to give it
more room.

Fix #3936

Co-authored-by: Diego Hurtado <[email protected]>

Author: xrmx

opentelemetry-sdk/tests/trace/export/test_export.py

@@ -513,7 +513,7 @@ def test_batch_span_processor_reset_timeout(self):
 
             # give some time for exporter to loop
             # since wait is mocked it should return immediately
-            time.sleep(0.05)
+            time.sleep(0.1)
             mock_wait_calls = list(mock_wait.mock_calls)
 
             # find the index of the call that processed the singular span