chore(sonar): apply collection-expression syntax across all sites (IDE0028)

Manual sweep of all 42 IDE0028 sites flagged by SonarQube — `dotnet format
analyzers --diagnostics IDE0028` declined to fix these (no .editorconfig
opt-in for `dotnet_style_prefer_collection_expression`), so applied by
hand. The repo already targets `<LangVersion>latest</LangVersion>` on
net8.0, so C# 12 collection expressions are available.

Pattern: `new List<T>()` / `new Dictionary<K,V>()` / `new ArrayList()` /
`new()` -> `[]` for empty; `new List<T> { ... }` -> `[...]` for literal.

24 files touched in src/{EFCore, LinqToSql, Query, Snowflake, SqlBreakdown,
SqlServer}; tests untouched (no IDE0028 sites in test code).

Build clean (35 warnings unchanged from baseline, 0 errors). All tests
remain green.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/Strata.SqlTools.SqlServer/Breakdowns/QueryBreakdown.cs

@@ -41,8 +41,8 @@ public class QueryBreakdown : SqlBreakdownBase, IQueryBreakdown
     public QueryBreakdown() : base()
     {
         Parser = new StatementParser();
-        _parameterList = new List<IQueryParam>();
-        _withClauses = new List<IWithClause>();
+        _parameterList = [];
+        _withClauses = [];
 
         // Initialize backing fields directly to avoid triggering cache invalidation
         _selectClause = new SqlExpressionClause(splitOnComma: true);
@@ -117,7 +117,7 @@ public class QueryBreakdown : SqlBreakdownBase, IQueryBreakdown
     /// Gets the parameter dictionary containing parameter names and their values.
     /// Parameter values can be set/updated after parsing.
     /// </summary>
-    public Dictionary<string, object> Parameters { get; } = new Dictionary<string, object>();
+    public Dictionary<string, object> Parameters { get; } = [];
 
     /// <summary>
     /// Gets the WITH clauses (Common Table Expressions) as an ordered list.