RGBELoader: Use FloatType as default texture type. (#22190)

examples/jsm/loaders/HDRCubeTextureLoader.js

@@ -22,7 +22,7 @@ class HDRCubeTextureLoader extends Loader {
 		super( manager );
 
 		this.hdrLoader = new RGBELoader();
-		this.type = UnsignedByteType;
+		this.type = FloatType;
 
 	}
 

examples/jsm/loaders/RGBELoader.js

@@ -21,7 +21,7 @@ class RGBELoader extends DataTextureLoader {
 
 		super( manager );
 
-		this.type = UnsignedByteType;
+		this.type = FloatType;
 
 	}