Improve "exhausted standby hosts to try" Error Message

[agavra]

Similarly to #7772, this error message is not super helpful to understand what's going on:

ksql/ksqldb-engine/src/main/java/io/confluent/ksql/physical/pull/HARouting.java

Lines 244 to 246 in 1a1297a

	if (round >= location.getNodes().size()) {
	throw new MaterializationException("Exhausted standby hosts to try.");
	}

We should include more information to help expose what's going on, such as which partitions failed and which hosts were attempted.