Geom API: condition tests for changes to MakeValid in GDAL 3.13

https://github.com/OSGeo/gdal/pull/14158 > Certain geometries cannot be read using GEOS, for example if Polygon rings are not closed or do not contain enough vertices. If a geometry cannot be read by GEOS, NULL will be returned. Starting with GDAL 3.13, GDAL will attempt to modify these geometries such that they can be read and repaired by GEOS. condition the following tests for GDAL 3.13: ```r Failure (test-geom.R:1409:5): make_valid works Expected `wkb2 <- g_make_valid(wkt2)` to throw a warning. Failure (test-geom.R:1410:5): make_valid works Expected `is.null(wkb2)` to be TRUE. Differences: `actual`: FALSE `expected`: TRUE Failure (test-geom.R:1431:5): make_valid works Expected `is.null(wkb_list[[2]])` to be TRUE. Differences: `actual`: FALSE `expected`: TRUE Failure (test-geom.R:1441:5): make_valid works Expected `is.null(wkb_list[[2]])` to be TRUE. Differences: `actual`: FALSE `expected`: TRUE ```