Include SPARK-46990 in databricks 15.4 LTS

[KamilK]

Hi, could you include fix SPARK-46990 ([SPARK-46990] Regression: Unable to load empty avro files emitted by event-hubs - ASF JIRA (apache.o...) in Databricks 15.4? (15.4 is in the beta stage, so it might be a right time to include fix)