fix(security): Resolve SonarQube security hotspots

Introduce a default regex match timeout across the library to prevent potential ReDoS attacks (SonarQube rule S6444).
Implement `[OnDeserialized]` methods to re-establish object invariants and validate state after deserialization, addressing SonarQube rule S5766.

src/Strata.SqlTools.LinqToSql/Comparers/QueryComparator.cs

@@ -221,7 +221,7 @@ public class QueryComparator
 
         // Normalize whitespace and case
         return System.Text.RegularExpressions.Regex
-            .Replace(clause.Trim(), @"\s+", " ")
+            .Replace(clause.Trim(), @"\s+", " ", System.Text.RegularExpressions.RegexOptions.None, Strata.SqlTools.SqlBreakdown.Utilities.RegexDefaults.MatchTimeout)
             .ToUpperInvariant();
     }