fix: added default projection of layer

Author: sjhoeksma

src/vendors/helpers/Layers.js

@@ -179,7 +179,7 @@ export function arcgisLoader(map, layerConfig, dataType) {
       .then((json) => {
         if (json.extent) {
           _extent = [json.extent.xmin, json.extent.ymin, json.extent.xmax, json.extent.ymax]
-          var epsg = 'EPSG:4326'
+          var epsg = layerConfig.source?.projection || 'EPSG:4326'
           if (json.extent.spatialReference.wkt) {
             //PROJCS["OSGB_1936_British_National_Grid",GEOGCS["GCS_OSGB 1936",DATUM["D_OSGB_1936",SPHEROID["Airy_1830",6377563.396,299.3249646]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["false_easting",400000.0],PARAMETER["false_northing",-100000.0],PARAMETER["central_meridian",-2.0],PARAMETER["scale_factor",0.9996012717],PARAMETER["latitude_of_origin",49.0],UNIT["Meter",1.0]]
             // proj4.defs("EPSG:28353",json.extent.spatialReference.wkt)