Flaky assertion about TextBuffer::find

[maxbrunsfeld]

seed: 109454428

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tests is a Catch v1.5.9 host application.
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TextBuffer - random edits and queries
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../test/native/text-buffer-test.cc:433
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../test/native/text-buffer-test.cc:522: FAILED:
  REQUIRE( search_result == (Range{ mutated_text.position_for_offset(match_result.start_offset), mutated_text.position_for_offset(match_result.end_offset), }) )
with expansion:
  ((0, 1), (1, 0)) == ((0, 0), (1, 0))

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