Wrong file: scope when file path contains spaces or special characters

Created by: lguychard

When navigating too a tree/blob, the search field will be scoped to the current repo/file:

However, when the file path contains spaces or other special characters, the scoped query is build from the URL-encoded file path, which will return no search results:

This is because the file path we use to build the scoped query is parsed from the location.

However, simply fixing parseBrowserRepoURL to decodeURIComponent(filePath) is not enough: if the decoded file path contains spaces, we would need to quote it to insert it as a valid filter.