fixed the issue that the leading trivia is lost after string interpolation conversion

Author: AppAppWorks

Sources/SourceKitLSP/Swift/CodeActions/ConvertStringConcatenationToStringInterpolation.swift

@@ -56,6 +56,7 @@ struct ConvertStringConcatenationToStringInterpolation: SyntaxRefactoringProvide
       [
         ExprSyntax(
           StringLiteralExprSyntax(
+            leadingTrivia: syntax.leadingTrivia,
             openingPounds: commonPounds,
             openingQuote: .stringQuoteToken(),
             segments: segments,

Tests/SourceKitLSPTests/CodeActionTests.swift

@@ -1009,7 +1009,9 @@ final class CodeActionTests: XCTestCase {
   func testConvertStringConcatenationToStringInterpolation() async throws {
     try await assertCodeActions(
       #"""
-      1️⃣#"["# + 2️⃣key + ": \(3️⃣d) " + 4️⃣value + ##"]"##5️⃣
+      1️⃣
+      #"["# + 2️⃣key + ": \(3️⃣d) " + 4️⃣value + ##"]"##5️⃣
+      
       """#,
       ranges: [("1️⃣", "2️⃣"), ("3️⃣", "4️⃣"), ("1️⃣", "5️⃣")],
       exhaustive: false
@@ -1024,6 +1026,7 @@ final class CodeActionTests: XCTestCase {
                 TextEdit(
                   range: positions["1️⃣"]..<positions["5️⃣"],
                   newText: ###"""
+                    
                     ##"[\##(key): \##(d) \##(value)]"##
                     """###
                 )