fix(linter): fix eslint/sort-imports allowSeparatedGroups not working with single empty line

[xuanduc987]

This fixes #15990

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[codspeed-hq]

CodSpeed Performance Report

Merging #16012 will not alter performance

_{Comparing xuanduc987:push-kwqloorxyvpp (ad331ae) with main (3976e4f)}

Summary

✅ 4 untouched
⏩ 41 skipped¹

Footnotes

1. 41 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[connorshea]

Hmm, this code should pass the rule even if this import has spaces in front of it. It does in ESLint: https://eslint.org/play/#eyJ0ZXh0IjoiaW1wb3J0IHsgZm9ybWF0IH0gZnJvbSBcIm94Zm10XCI7XG5cbiAgICAgICAgIGltcG9ydCB7IGRlZmluZVJ1bGUgfSBmcm9tIFwib3hsaW50XCI7XG4iLCJvcHRpb25zIjp7InJ1bGVzIjp7InNvcnQtaW1wb3J0cyI6WyJlcnJvciIseyJhbGxvd1NlcGFyYXRlZEdyb3VwcyI6dHJ1ZX1dfSwibGFuZ3VhZ2VPcHRpb25zIjp7InBhcnNlck9wdGlvbnMiOnsiZWNtYUZlYXR1cmVzIjp7fX0sImVjbWFWZXJzaW9uIjoyMDI2fX19

[xuanduc987]

Yes, the change in this test is to fail the previous implementation

[connorshea]

Ah, can we include both still?

[xuanduc987]

Thank you, I added a new test case instead of modifying the existing one.