Deprecated ESLint function used in Storybook ESLint Plugin

[connorshea]

Currently, the ESLint rule for default-exports in the storybook ESLint plugin uses context.getFilename(), which is deprecated (see here).

https://github.com/storybookjs/storybook/blob/67db3e4726ab30a236d466119cff5b2bc3885a4d/code/lib/eslint-plugin/src/rules/default-exports.ts#L102C67-L102C78

It should be as simple as updating the function to filename() instead, I believe? I didn't know if this really warranted opening an actual Issue, so just leaving it in the discussions section.

I happened to discover this while trying to use the plugin with oxlint, so it'd be neat if it were updated :)