`default` keyword is offered in expression-bodied arrow function completions

Nessuno ha ancora preso questa issue.

## Bug Report

### Search Terms
- arrow function completion
- default keyword completion
- expression-bodied arrow function
- keyword completions
- completionListAtEndOfWordInArrowFunction

### Version & Regression Information
- This is the behavior in every version I tried, and I reviewed the FAQ for entries about keyword completions in expression-bodied arrow function contexts.

### Playground Link
Playground link with relevant code: https://www.typescriptlang.org/play?#code/PTAEFkE9QYwewCYFNQHM5IM6gBZIE5JA

### Code
```ts
(d, defaultIsAnInvalidParameterName) => d

(d, defaultIsAnInvalidParameterName) => default
```

### Actual behavior
At the expression-bodied arrow function completion position, `default` is offered as a keyword completion.

### Expected behavior
`default` should not appear as a keyword completion in expression-bodied arrow function expression context.

### Additional information about the issue
There are already nearby fourslash tests that appear to acknowledge this behavior as undesirable:
- `tests/cases/fourslash/completionListAtEndOfWordInArrowFunction02.ts`
- `tests/cases/fourslash/completionListAtEndOfWordInArrowFunction03.ts`

I also traced the completion path locally and confirmed the keyword currently comes from the generic `FunctionLikeBodyKeywords` filtering path.

Inizia con il percorso di completion descritto nell’issue e con il percorso generico di filtraggio di FunctionLikeBodyKeywords. Leggi tests/cases/fourslash/completionListAtEndOfWordInArrowFunction02.ts e tests/cases/fourslash/completionListAtEndOfWordInArrowFunction03.ts, quindi usa l’esempio Playground collegato per riprodurre la completion. Il lavoro è completato quando `default` è assente nelle completions delle espressioni di funzione freccia con corpo espressione e la relativa copertura fourslash passa.

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