What is the bug?

I'm using Mapserver (v8.2.2) and a VRT file with a SrcRegion defined. And when performing a WMS getfeatureinfo request the request fails. To my opinion this is due to the type of error thrown in ogrvrtlayer.cpp.

Case:
I'm doing a WMS request that results in an error thrown by the OGR VRT layer: CPLError(CE_Failure, CPLE_AppDefined,"Spatial filter should be polygon when a SrcRegion is defined. Ignoring it");. However the poSrcRegion is correctly set and execution continues.

This exception is caught by mapserver with if (CPLGetLastErrorType() == CE_Failure) that results in failure.

Expected result:
OGR VRT layer to throw a CE_Warning like this: CPLError(CE_Warning, CPLE_AppDefined,"Spatial filter should be polygon when a SrcRegion is defined. Ignoring it");

Steps to reproduce the issue

Dataset:
BAG geopackage: https://service.pdok.nl/lv/bag/atom/bag.xml

VRT file:

<OGRVRTDataSource>
    <OGRVRTLayer name="pand">
        <SrcDataSource>bag-light.gpkg</SrcDataSource>
        <SrcLayer>pand</SrcLayer>
        <LayerSRS>EPSG:28992</LayerSRS>
        <GeometryField>
            <!-- Clip is only implemented at GeometryField level and not at OGRVRTLayer level -->
            <SrcRegion clip="false">POLYGON((120000 435000, 155000 435000, 155000 470000, 120000 470000, 120000 435000))</SrcRegion>
        </GeometryField>
    </OGRVRTLayer>
</OGRVRTDataSource>

No idea how to reproduce this with ogr2ogr since I cannot find out how the m_poFilterGeom is set that seems to be something different then a polygon.

Versions and provenance

GDAL 3.6, 3.9.3, 3.10.0 self-built from binaries.

Additional context

No response