Move SwitchCaseSyntax initializer

Author: kimdv

Sources/SwiftSyntaxBuilder/ConvenienceInitializers.swift

@@ -358,15 +358,6 @@ extension StringLiteralExprSyntax {
   }
 }
 
-// MARK: - SwitchCase
-
-extension SwitchCaseSyntax {
-  public init(_ label: SwitchCaseSyntax, @CodeBlockItemListBuilder statementsBuilder: () -> CodeBlockItemListSyntax) {
-    self = label
-    self.statements = statementsBuilder()
-  }
-}
-
 // MARK: - TernaryExpr
 
 extension TernaryExprSyntax {

Sources/SwiftSyntaxBuilder/SyntaxNodeWithBody.swift

@@ -144,6 +144,15 @@ public extension IfStmtSyntax {
   }
 }
 
+// MARK: - SwitchCase
+
+extension SwitchCaseSyntax {
+  public init(_ header: PartialSyntaxNodeString, @CodeBlockItemListBuilder statementsBuilder: () -> CodeBlockItemListSyntax) {
+    self = SwitchCaseSyntax("\(header)")
+    self.statements = statementsBuilder()
+  }
+}
+
 // MARK: - SwitchStmtSyntax
 // SwitchStmtSyntax is a special scenario as it don't have body or members
 // So we cannot conform to `HasTrailingCodeBlock` or `HasTrailingMemberDeclBlock`