GeometryFixer does not propagate keepCollapsed in FixCollection

[FObermaier]

GeometryFixer.fixCollection internally uses the public static Geometry fix(Geometry) function.
If the calling instance's isKeepCollapsed variable is set to true, this setting is not propagated when fixing the child geometries:

jts/modules/core/src/main/java/org/locationtech/jts/geom/util/GeometryFixer.java

Lines 392 to 397 in c49088a

	private Geometry fixCollection(GeometryCollection geom) {
	Geometry[] geomRep = new Geometry[geom.getNumGeometries()];
	for (int i = 0; i < geom.getNumGeometries(); i++) {
	geomRep[i] = fix(geom.getGeometryN(i));
	}
	return factory.createGeometryCollection(geomRep);