Validation for self-intersection WKT Multipolygon fails at the WKTReader, while works when wrapped in a `GEOMETRYCOLLECTION`

Used version 0.8.

We encountered that parsing a WKT MultiPolygon containing a self-intersection works while it will raise a validation error when it is wrapped into a GEOMETRYCOLLECTION.

This code parses the WKT string into a valid MultiPolygon instance.

var reader = (WKTReader) JtsSpatialContext.GEO.getFormats().getWktReader();
var shape = reader.parse(''MULTIPOLYGON (((5 5, 10 5, 10 10, 5 5)), ((6 6, 10 5, 10 10, 6 6)))');

While this one raises a InvalidShapeException:

var reader = (WKTReader) JtsSpatialContext.GEO.getFormats().getWktReader();
var shape = reader.parse(''GEOMETRYCOLLECTION ( MULTIPOLYGON (((5 5, 10 5, 10 10, 5 5)), ((6 6, 10 5, 10 10, 6 6))) )');

Stacktrace:

Caused by: org.locationtech.spatial4j.exception.InvalidShapeException: Self-intersection at or near point (10.0, 5.0, NaN)
	at org.locationtech.spatial4j.shape.jts.JtsGeometry.validate(JtsGeometry.java:127)
	at org.locationtech.spatial4j.shape.jts.JtsShapeFactory.makeShapeFromGeometry(JtsShapeFactory.java:502)
	at org.locationtech.spatial4j.shape.jts.JtsShapeFactory.makeShapeFromGeometry(JtsShapeFactory.java:475)
	at org.locationtech.spatial4j.shape.jts.JtsShapeFactory$JtsMultiShapeBuilder.build(JtsShapeFactory.java:446)
	at org.locationtech.spatial4j.io.WKTReader.parseGeometryCollectionShape(WKTReader.java:356)
	at org.locationtech.spatial4j.io.WKTReader.parseShapeByType(WKTReader.java:165)
	at org.locationtech.spatial4j.io.WKTReader.parseIfSupported(WKTReader.java:110)
	at org.locationtech.spatial4j.io.WKTReader.parse(WKTReader.java:81)

I would expect that both variants behave the same.

Start by reproducing both inputs with WKTReader.parse, then read WKTReader.java around parseGeometryCollectionShape and JtsShapeFactory.java around makeShapeFromGeometry and JtsMultiShapeBuilder.build. Compare how the standalone and wrapped MultiPolygon are validated; done means both variants behave consistently for the reported self-intersection case.