fix check

Author: eric-maynard

polaris-core/src/main/java/org/apache/polaris/core/persistence/bootstrap/SchemaOptions.java

@@ -38,5 +38,13 @@ default void validate() {
     if (schemaVersion() != null && schemaFile() != null) {
       throw new IllegalStateException("Only one of schemaVersion or schemaFile can be set.");
     }
+    if (schemaVersion() != null && !schemaVersion().equals(LATEST)) {
+      try {
+        Integer.parseInt(schemaVersion());
+      } catch (NumberFormatException e) {
+        throw new IllegalArgumentException(
+            "schemaVersion must be a valid integer or " + LATEST + ": " + schemaVersion(), e);
+      }
+    }
   }
 }