Redundant "Unable to execute code after break" diagnostic is given when using a label after a break

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### How are you using the lua-language-server?

Kakoune

### Which OS are you using?

Linux

### What is the issue affecting?

Diagnostics/Syntax Checking

### Expected Behaviour

No diagnostic is given.

### Actual Behaviour

A diagnostic `Unable to execute code after 'break'` is given, even though the only thing after the `break` is a label.

### Reproduction steps

Reproducible with the following code:
```lua
for i = 1, 10 do
if i < 8 then
print(i)
goto continue
end
break
::continue::
end
```

### Additional Notes

_No response_

### Log File

The log isn't very relevant in this case but here it is anyway.
[luals.log](https://github.com/LuaLS/lua-language-server/files/15503586/luals.log)

Inizia con la riproduzione Lua in Diagnostics/Syntax Checking ed eseguila tramite il server del linguaggio in Kakoune su Linux. Traccia il punto in cui viene prodotto il diagnostico `Unable to execute code after 'break'`, quindi verifica che il diagnostico sia assente quando l’unica istruzione successiva è l’etichetta `::continue::`.

Scritto dal modello di indicizzazione a partire dal testo della issue.