false positive svelte/no-unused-props when Props extend other ComponentProps

[Theo-Steiner]

Before You File a Bug Report Please Confirm You Have Done The Following...

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.

What version of ESLint are you using?

9.34.0

What version of eslint-plugin-svelte are you using?

3.11.0

What did you do?

Configuration

import js from "@eslint/js";
import sveltePlugin from "eslint-plugin-svelte";
import tseslint from "typescript-eslint";
export default tseslint.config(
  js.configs.recommended,
  ...tseslint.configs.recommended,
  ...sveltePlugin.configs["flat/recommended"],
  {
    files: ['**/*.svelte', '**/*.svelte.ts', '**/*.svelte.js'],
    languageOptions: {
      parserOptions: {
        parser: tseslint.parser,
        extraFileExtensions: [".svelte"],
        projectService: true
      },
    }
  },
  {
  	rules: {
			'@typescript-eslint/no-unsafe-assignment': 'error',
		}
  }
);

ComponentA.svelte

<script lang="ts">
    let {a}: {a: number} = $props();
</script>

<p>{a}</p>

MyComponent.svelte ← error occurs here

<script lang="ts">
    import type { ComponentProps } from 'svelte';

    import ComponentA from './ComponentA.svelte'

    interface Props extends ComponentProps<typeof ComponentA> {
        b: number;
    }

    let { a, b }: Props = $props()
</script>

<ComponentA {a} />
<p>{b}</p>

What did you expect to happen?

when using all props (the Component's own props & the extended components props), I expect svelte/no-unused-props to not be triggered

What actually happened?

Index signature is unused. Consider using rest operator (...) to capture remaining properties. [(svelte/no-unused-props)] is reported by eslint

Link to GitHub Repo with Minimal Reproducible Example

Playground

Additional comments

No response