[Bug]: Automatic title sanitization does not support case-insensitive trailing duplicate.

[ksugawara61]

Describe the bug

My project story file directory structure composed lower camel case directory and upper camel case component file.
ex) button/Button.tsx, button/Button.stories.tsx

But, Automatic titles sanitization of CSF 3.0 does not support case-insenstive trailing duplicate.
Is there a way to resolve case-insensitive trailing duplicate removal?

To Reproduce

You can reproduce this by creating component and story files like button/Button.tsx,button/Button.stories.tsx under the component directory and setting automatic titles.

System

Storybook Environment Info:

  System:
    OS: macOS 13.6.1
    CPU: (12) arm64 Apple M2 Max
    Shell: 3.2.57 - /bin/bash
  Binaries:
    Node: 18.19.0 - ~/.nodenv/versions/18.19.0/bin/node
    Yarn: 1.22.21 - ~/.nodenv/versions/18.19.0/bin/yarn
    npm: 10.2.3 - ~/.nodenv/versions/18.19.0/bin/npm <----- active
    pnpm: 8.14.0 - ~/.nodenv/versions/18.19.0/bin/pnpm
  Browsers:
    Chrome: 120.0.6099.129
    Safari: 16.6
  npmPackages:
    @storybook/addon-actions: ^7.1.0 => 7.6.6 
    @storybook/addon-essentials: ^7.1.0 => 7.6.6 
    @storybook/addon-interactions: ^7.1.0 => 7.6.6 
    @storybook/addon-links: ^7.1.0 => 7.6.6 
    @storybook/addon-mdx-gfm: ^7.1.0 => 7.6.6 
    @storybook/addons: ^7.1.0 => 7.6.6 
    @storybook/nextjs: ^7.1.0 => 7.6.6 
    @storybook/react: ^7.1.0 => 7.6.6 
    @storybook/testing-library: ^0.2.0 => 0.2.2 
    chromatic: ^10.0.0 => 10.2.0 
    eslint-plugin-storybook: ^0.6.12 => 0.6.15 
    msw-storybook-addon: ^1.8.0 => 1.10.0 
    storybook: ^7.1.0 => 7.6.6 
    storybook-addon-performance: 0.17.1 => 0.17.1 

### Additional context

_No response_