Apply the min-width-by-min-width test to islands after pruning.
We're looking for minimum *web* width. A blob does not a web make.
Fixes https://gitlab.com/kicad/code/kicad/issues/6907
(cherry picked from commit 1a2e0d8226
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@ -1188,6 +1188,19 @@ bool ZONE_FILLER::computeRawFilledArea( const ZONE* aZone,
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if( half_min_width - epsilon > epsilon )
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aRawPolys.Deflate( half_min_width - epsilon, numSegs, cornerStrategy );
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// Min-thickness is the web thickness. On the other hand, a blob min-thickness by
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// min-thickness is not useful. Since there's no obvious definition of web vs. blob, we
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// arbitrarily choose "at least 2X the area".
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double minArea = (double) aZone->GetMinThickness() * aZone->GetMinThickness() * 2;
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for( int ii = aFillPolys.OutlineCount() - 1; ii >= 0; ii-- )
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{
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std::vector<SHAPE_LINE_CHAIN>& island = aFillPolys.Polygon( ii );
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if( island.empty() || island.front().Area() < minArea )
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aFillPolys.DeletePolygon( ii );
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}
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DUMP_POLYS_TO_COPPER_LAYER( aRawPolys, In9_Cu, wxT( "deflated" ) );
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if( m_progressReporter && m_progressReporter->IsCancelled() )
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