Do not log errors for propagated exceptions in IcebergCatalogAdapter (#…

…876)

Log them as "DEBUG" instead.

This is to avoid having an "ERROR" log message about "namespace not
found" (with a long stack trace) when, for example, Spark executes
a `CREATE NAMESPACE myNewNamespace`.

service/common/src/main/java/org/apache/polaris/service/catalog/IcebergCatalogAdapter.java

@@ -162,7 +162,7 @@ private Response withCatalog(
     try (PolarisCatalogHandlerWrapper wrapper = newHandlerWrapper(securityContext, catalogName)) {
       return action.apply(wrapper);
     } catch (RuntimeException e) {
-      LOGGER.error("Error while operating on catalog", e);
+      LOGGER.debug("RuntimeException while operating on catalog. Propagating to caller.", e);
       throw e;
     } catch (Exception e) {
       LOGGER.error("Error while operating on catalog", e);