Globbed files are not added to the import once filter

[kevinramharak]

From what I can tell the following lines:
https://github.com/maoberlehner/node-sass-magic-importer/blob/master/packages/node-sass-magic-importer/src/index.ts#L125-L128

Do not store the imported files. dart-sass (not sure about node-sass does not seem to run imports recusivly (took me a few hours). This allows for possible duplicates when using globbing.

Is this intendend? It seems easy enough to fix with something like:

        if (globFilePaths) {
            const contents = globFilePaths
                .reduce((result, resolvedUrl) => {
                    const id = getStoreId(resolvedUrl, selectorFilters, nodeFilters);
                    if (!store.has(id)) {
                        console.log('including:  ', resolvedUrl);
                        store.add(id);
                        result.push(`@import '${filterPrefix}${resolvedUrl}';`);
                    } else {
                        console.log('discarding: ', resolvedUrl);
                    }
                    return result; 
                }, []).join('\n');
            return { contents };
        }