PluginPT15 do not handle accuentuate search

Describe the bug

I have a document with a sentence "Invitation gâteau au chocolat" (chocolate cake in French) PluginPT15 and PluginQPS return wrong results because of accuentuate ?

To Reproduce

With plugin PluginPT15

1. If I search for "term=Gateau" I get NO results
2. If I search for "term=Gâteau" I get any results

With PluginQPS "Gateau" do not match "Gâteau" but "Gâteau" match.

Expected behavior

Both plugins should match Gâteau or Gateau

Environment Info

Orama 3.1.x

Affected areas

Search

Additional context

I use Oarama as a cache for a better search of AirTable data. I'm searching for "term" along all fields with some boost. PluginPT15 seems to be way better than default search for this usecase because of field ranking mechanism over large text.