Changing file extension with webpack 5 breaks the compilation

[zlk89]

Reproducible steps:

1. Clone to this repro: https://github.com/zlk89/webpack-reprods/tree/tsconfig-paths-webpack-plugin-issue
2. yarn install
3. yarn start - let it build and store the cache
4. change a file's extension: mv src/utils.ts src/utils.tsx

You will see error:

ERROR in ./src/utils.tsx
Module build failed (from ./node_modules/babel-loader/lib/index.js):
Error: ENOENT: no such file or directory, open '/webpack-reprods/src/utils.ts'
 @ ./src/index.ts 1:0-32 2:0-5

It's still trying to find the src/utils.ts which doesn't exist any more.

If you kill the process, and rerun yarn start, it still fails unless you delete the ./.webpack_cache folder