fix: 'TargetLanguage' has no exported member 'VISUALIZ…

…E' (backport #1238) (#1240)

# Backport

This will backport the following commits from `main` to
`maintenance/v5.1`:
- [fix: 'TargetLanguage' has no exported member
'VISUALIZE'
(#1238)](#1238)

<!--- Backport version: 9.3.0 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

Co-authored-by: Momo Kornher <kornherm@amazon.co.uk>

src/languages/target-language.ts

@@ -11,7 +11,9 @@ export enum TargetLanguage {
 
 const VALID_TARGET_LANGUAGES = new Set(Object.values(TargetLanguage));
 
-export function targetName(language: TargetLanguage.PYTHON | TargetLanguage.VISUALIZE): 'python';
+/** @internal an alias of PYTHON to make intent clear when language is irrelevant */
+export function targetName(language: TargetLanguage.VISUALIZE): 'python';
+export function targetName(language: TargetLanguage.PYTHON): 'python';
 export function targetName(language: TargetLanguage.CSHARP): 'dotnet';
 export function targetName(language: TargetLanguage.JAVA): 'java';
 export function targetName(language: TargetLanguage.GO): 'go';