Preserve alignment clause in interpolation code fix

Ensures that the alignment clause is retained when replacing interpolation expressions in LuceneDev1001_FloatingPointFormattingCSCodeFixProvider. Also fixes string formatting in LuceneDev1006Sample to use correct quotes and spacing.

Author: ksanjeev284

src/Lucene.Net.CodeAnalysis.Dev.CodeFixes/LuceneDev1xxx/LuceneDev1001_FloatingPointFormattingCSCodeFixProvider.cs

@@ -192,6 +192,7 @@ private async Task<Document> ReplaceInterpolationExpressionAsync(
             };
 
             var updatedInterpolation = interpolation;
+            var alignmentClause = interpolation.AlignmentClause;
 
             if (interpolation.FormatClause is not null)
             {
@@ -207,9 +208,14 @@ private async Task<Document> ReplaceInterpolationExpressionAsync(
                 .WithLeadingTrivia(expression.GetLeadingTrivia())
                 .WithTrailingTrivia(expression.GetTrailingTrivia());
 
-            updatedInterpolation = updatedInterpolation
-                .WithExpression(replacementExpression)
-                .WithAdditionalAnnotations(Formatter.Annotation);
+            updatedInterpolation = updatedInterpolation.WithExpression(replacementExpression);
+
+            if (alignmentClause is not null)
+            {
+                updatedInterpolation = updatedInterpolation.WithAlignmentClause(alignmentClause);
+            }
+
+            updatedInterpolation = updatedInterpolation.WithAdditionalAnnotations(Formatter.Annotation);
 
             DocumentEditor editor = await DocumentEditor.CreateAsync(document, cancellationToken).ConfigureAwait(false);
             editor.ReplaceNode(interpolation, updatedInterpolation);

src/Lucene.Net.CodeAnalysis.Dev.Sample/LuceneDev1006Sample.cs

@@ -26,11 +26,11 @@ public class LuceneDev1006Sample
 
     public string DescribeConcatenation()
     {
-        return ""  level "" + levelBottom + "" to "" + maxLevel;
+        return "  level " + levelBottom + " to " + maxLevel;
     }
 
     public string DescribeInterpolation()
     {
-        return $""  level {levelBottom} to {maxLevel}"";
+        return $"  level {levelBottom} to {maxLevel}";
     }
 }