Add readonly modifier to Math.min and Math.max

### ⚙ Compilation target

ES2023

### ⚙ Library

lib.es5.d.ts

### Missing / Incorrect Definition

Current signatures of `Math.max` and `Math.min`
```
max(...values: number[]): number;
min(...values: number[]): number;
```
should actually be
```
max(...values: readonly number[]): number;
min(...values: readonly number[]): number;
```
since they do not modify the rest parameter

### Sample Code

```TypeScript
const numbers: readonly number[] = [1, 2, 3, 4, 5];
const min = Math.min.apply(undefined, numbers);
```

### Documentation Link

_No response_

Start in lib.es5.d.ts and inspect the declarations for Math.min and Math.max. Verify the readonly number[] sample against the current signatures, update the definitions so the sample type-checks, and confirm that existing Math behavior remains covered by the project's tests.

Written by the indexing model from the issue text.