CLDR-16532 Ignore missing hidden notifications table if db is too old (…

…unicode-org#2834)

-Avoid throwing exception with db before version 42, for testing other features than hidden notifications

-Earlier versions had versioned tables like cldr_dash_hide_41 or cldr_review_hide_38

tools/cldr-apps/src/main/java/org/unicode/cldr/web/ReviewHide.java

@@ -103,8 +103,11 @@ private void getData() {
                 this.hiddenNotifications.put(subtype, xpstrid, val);
             }
         } catch (SQLException sqe) {
-            SurveyLog.logException(sqe, "Getting hidden notifications for uid#" + userId + " in " + localeId, null);
-            throw new InternalError("Error getting hidden notifications: " + sqe.getMessage());
+            // first version with cldr_dash_hide table is 42; silently ignore exceptions for earlier versions
+            if (Integer.parseInt(SurveyMain.getNewVersion()) >= 42) {
+                SurveyLog.logException(sqe, "Getting hidden notifications for uid#" + userId + " in " + localeId, null);
+                throw new InternalError("Error getting hidden notifications: " + sqe.getMessage());
+            }
         } finally {
             DBUtils.close(rs, s, conn);
         }