[Feature Request] [Typescript Extension] Less redundant inlay hints for arrow function vars/consts

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Example ts file without inlay hints:
```ts
//No inlay hints
import { createContext, useContext } from "solid-js";
import type { Application } from "pixi.js";

export const PixiContext = createContext();

export const usePixi = () => useContext(PixiContext)!;
```

Example ts file with all inlay hints:
```ts
//All inlay hints
import { createContext, useContext } from "solid-js";
import type { Application } from "pixi.js";

export const PixiContext /*: Context | undefined>*/ = createContext();

export const usePixi /*: () => Application*/ = () /*: Application<...*/ => useContext(PixiContext)!;
```

My suggestion is to extend the `TypeScript › Inlay Hints › Variable Types: Suppress When Type Matches Name` setting to also hide the inlay hint for a variable/constant when its value is an **arrow function** that already displays its own return type inlay hint.

Example ts file with my suggestion:
```ts
//Feature suggestion
import { createContext, useContext } from "solid-js";
import type { Application } from "pixi.js";

export const PixiContext /*: Context | undefined>*/ = createContext();

export const usePixi = () /*: Application*/ => useContext(PixiContext)!;
```

This would avoid redundant type information when the variable name and the function's return type provide sufficient context.

Begin by locating the TypeScript inlay-hints implementation and the “Variable Types: Suppress When Type Matches Name” setting. Compare the existing arrow-function return-type hint with the requested variable-hint suppression, then add coverage showing redundant variable hints are hidden while return hints remain.

Written by the indexing model from the issue text.