FIX: fallback page should use path not file location

[palkan]

Summary

When resolving fallback page for the path (fallbackLanguages option), we should consider the original path, not the file location (which could be different when aliases are used).

This patch is used in this repo and "deployed" at https://test-prof.evilmartians.io/.

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[anikethsaha]

I think there is a linting issue, Can you fix that. ?
Also, it would be great to have some tests for this.

[palkan]

@anikethsaha Fixed linter issue.

Added a Cypress test (couldn't find any unit-level tests for these functionality 🤷🏻‍♂️).

[palkan]

@anikethsaha ping 🙂

The base branch was changed.

[sy-records]

LGTM.

@anikethsaha The previous branch is wrong, if it is merged, it will be submitted to master.

[anikethsaha]

coool

Thanks