With TOOLING loaded, typing `javap(` followed by TAB yields:

Actual:
```
>jshell TOOLING
| Welcome to JShell -- Version 21
| For an introduction type: /help intro
jshell> javap(
Signatures:
void javap(Class<?> type) throws Exception
void javap(String...)
void javap(Class<?> type) throws Exception
void javap(String...)
```

Expected:
```
>jshell TOOLING
| Welcome to JShell -- Version 21
| For an introduction type: /help intro
jshell> javap(
Signatures:
void javap(Class<?> type) throws Exception
void javap(String...)
```

Signatures of other methods defined in the TOOLING script are, as expected, only shown once.