fix(multivalue): NJ-3/NJ-4/NJ-5 review fixes

- NJ-3: widen per-row catch to Exception (an STJ encode failure can't abort startup); drop dead null-guard already excluded by the SQL filter
- NJ-4: capture logger/instanceName in locals for the fire-and-forget normalize continuation (match the sibling pattern in this actor)
- NJ-5: emit a warn-log when a malformed List value is imported verbatim; thread an optional ILogger<BundleImporter> to the sync re-import site

src/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase/ListValueNormalizer.cs

@@ -54,10 +54,13 @@ public static class ListValueNormalizer
                     rewritten++;
                 }
             }
-            catch (FormatException ex)
+            catch (Exception ex)
             {
+                // Never abort startup for a single bad row. FormatException from Decode is the
+                // expected case; the broad catch also covers an unexpected serialize failure
+                // (e.g. a JsonException on a non-finite value) so one poison row can't crash boot.
                 logger?.LogWarning(ex,
-                    "List value normalizer: skipping unparseable list value for TemplateAttribute {Id}.",
+                    "List value normalizer: skipping unprocessable list value for TemplateAttribute {Id}.",
                     a.Id);
             }
         }
@@ -71,14 +74,6 @@ public static class ListValueNormalizer
 
         foreach (var o in overrideRows)
         {
-            if (o.ElementDataType is null)
-            {
-                logger?.LogDebug(
-                    "List value normalizer: skipping InstanceAttributeOverride {Id} with no element type.",
-                    o.Id);
-                continue;
-            }
-
             try
             {
                 var native = AttributeValueCodec.Encode(
@@ -89,10 +84,10 @@ public static class ListValueNormalizer
                     rewritten++;
                 }
             }
-            catch (FormatException ex)
+            catch (Exception ex)
             {
                 logger?.LogWarning(ex,
-                    "List value normalizer: skipping unparseable list value for InstanceAttributeOverride {Id}.",
+                    "List value normalizer: skipping unprocessable list value for InstanceAttributeOverride {Id}.",
                     o.Id);
             }
         }