Ghost error appearing after signature help in inferred signatures with rest parameter

### 🔎 Search Terms

signature help inference signature rest spread nested

### 🕗 Version & Regression Information

- This is the behavior in every version I tried

### ⏯ Playground Link

https://www.typescriptlang.org/play/?ts=6.0.0-dev.20250803#code/KYDwDg9gTgLgBASwHY2FAZgQwMbDgBQTGEwCMAbPAbwCg44wjgAeAQQBo4AhOAXjiTAAbmgB8AChgALBAGcAXHA5wyi8QH1FrAJR9R3bYq4BuGgF8aNGAE9icAMIQhmKAkwo2+-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-GNpgsLZu2uW5+weeByAgC9-W2AA6bCIWAS0Y2ARRSl2RpWCTTBrGYdxrFEN89CeF5+SECBJ04GUoDYsUoDg0BIFgJDB3gbBMFQTpoDtWQAGlgCafgACIAAFgEYjIAHo0B-VThNE8S8Lk0JeOgeBLgQvsB0eH0EGkewROAMSoGsRRmBsnTXDwrcK2VMioAo5h8GTYhYGsaSaNPehsMw7S7N0hQHFs+yJLooI4DYKBOmVbNK283zqNETVgBgTh7A8ndlSoUU-XECKXHSrQ0tkQNiPgMwwocYYkv0YqADJ8W9YBKuq+q6vSxqCrgHqQLgEkooSvCQrpfEppcxAkDi1yJJJJBUihNAaQW5k8DMGCzgM8AjLgGw7FYchyBCq1NhFAoSpzcrpvimL5sUZBXigOAAEU4Aseh5zgABrGSIHQf7tl8LjTEM-jLrwApyx8jJrvIDYipEjLtxzfyIECmwQq8Nbcc8lQkGsbYQZRlIcEydlXpmj6ZIW17JJWsmFuowHAdo+hYf8U6+OMntEPMoSROwKQXOihynO2Iptkltb5Yk56svIyiMbujZRDy7ZWAAJmvApTe2UpjZPcQsOwmrYpJHU4AiuXZtka96HQNQNMUOm0ZgDGsbV93Nu20hdtEd8+QyNhTaeeOrYFuAaQ6lLlHKW36GUikYD9lTWWxDk05jiY4AAHyUePzYrp4QGuVJLmD-2GaD9k3ZisOdqgGkDc1Wuk9CBDLSDCAIG-aBNeVT9Rx-ANxDk60x4nqA5M4KgzG0TDGGILO4Es6z3oche6ghTBkDk7Q6I3yxh+VLgXBXqeoNjL8xygee5IfqAV7Xo0t53sAPeB9ZZH2sAvcE7RgAQj-nJU+58kCX2vucO+3BMAAC8n6ZWnjGEcK9P4P0we-P+G8AFMGAVZUBrlwFyUgagGBV9dA33gr2O4yE4CkAwWobYIBfDhzQCXAuzB2JFmXu-Wu38n6V0ISvTi-geJnX4qrMAyZOg+QhCKTh6DxAAEYyG720jLDux84EQDPhfTgGh3yoU6BoTCEFOjaCcaESwri3FAA

### 💻 Code

```ts
///

// @strict: true
// @target: esnext
// @lib: esnext

//// export interface Pipeable {
//// pipe(this: A, ab: (_: A) => B): B;
//// }
////
//// type Covariant = (_: never) => A;
////
//// interface VarianceStruct {
//// readonly _V: string;
//// readonly _A: Covariant;
//// readonly _E: Covariant;
//// readonly _R: Covariant;
//// }
////
//// declare const EffectTypeId: unique symbol;
////
//// interface Variance {
//// readonly [EffectTypeId]: VarianceStruct;
//// }
////
//// interface Effect
//// extends Variance,
//// Pipeable {}
////
//// interface Class extends Pipeable {
//// new (): Fields;
//// }
////
//// interface TaggedErrorClass extends Class {
//// readonly _tag: Tag;
//// }
////
//// declare const TaggedError: (identifier?: string) => <
//// Tag extends string,
//// Fields
//// >(
//// tag: Tag,
//// fieldsOr: Fields
//// ) => TaggedErrorClass<
//// Tag,
//// {
//// readonly _tag: Tag;
//// }
//// >;
////
//// declare const log: (
//// ...message: ReadonlyArray
//// ) => Effect;
////
//// export const categoriesKey = "@effect/error/categories";
////
//// export declare const withCategory: >(
//// ...categories: Categories
//// ) => , Ret, C extends { new (...args: Args): Ret }>(
//// C: C
//// ) => C & {
//// new (...args: Args): Ret & {
//// [categoriesKey]: { [Cat in Categories[number]]: true };
//// };
//// };
////
//// export type AllKeys = E extends { [categoriesKey]: infer Q }
//// ? keyof Q
//// : never;
//// export type ExtractAll = Cats extends any
//// ? Extract
//// : never;
////
//// export declare const catchCategory: <
//// E,
//// const Categories extends Array>,
//// A2,
//// E2,
//// R2
//// >(
//// ...args: [
//// ...Categories,
//// f: (err: ExtractAll) => Effect
//// ]
//// ) => (
//// effect: Effect
//// ) => Effect>, R | R2>;
////
//// class FooError extends TaggedError()("FooError", {}).pipe(
//// withCategory("domain")
//// ) {}
////
//// class BarError extends TaggedError()("BarError", {}).pipe(
//// withCategory("system", "domain")
//// ) {}
////
//// class BazError extends TaggedError()("BazError", {}).pipe(
//// withCategory("system")
//// ) {}
////
//// declare const baz: (
//// x: number
//// ) => Effect;
////
//// export const program = baz(1).pipe(catchCategory("domain",/*1*/ (_) => log(_._tag)));

_No response_

Comienza con la prueba inline de fourslash.ts y reproduce la secuencia de edit, signature-help, backspace y diagnostic del ejemplo de Playground. Sigue la ruta de retrigger de signature-help para la llamada a rest-parameter inferida. Se considera terminado cuando el código sin cambios no produce ningún semantic diagnostic después de eliminar la coma, mientras signature help sigue visible.

Escrito por el modelo de indexación a partir del texto del issue.