Fix Ring-Axis parameter being always visible

doc/classes/ParticlesMaterial.xml

@@ -144,7 +144,7 @@
 		<member name="emission_point_texture" type="Texture" setter="set_emission_point_texture" getter="get_emission_point_texture">
 			Particles will be emitted at positions determined by sampling this texture at a random position. Used with [constant EMISSION_SHAPE_POINTS] and [constant EMISSION_SHAPE_DIRECTED_POINTS]. Can be created automatically from mesh or node by selecting "Create Emission Points from Mesh/Node" under the "Particles" tool in the toolbar.
 		</member>
-		<member name="emission_ring_axis" type="Vector3" setter="set_emission_ring_axis" getter="get_emission_ring_axis" default="Vector3( 0, 0, 1 )">
+		<member name="emission_ring_axis" type="Vector3" setter="set_emission_ring_axis" getter="get_emission_ring_axis">
 			The axis of the ring when using the emitter [constant EMISSION_SHAPE_RING].
 		</member>
 		<member name="emission_ring_height" type="float" setter="set_emission_ring_height" getter="get_emission_ring_height">

scene/resources/particles_material.cpp

@@ -1128,7 +1128,7 @@ void ParticlesMaterial::_validate_property(PropertyInfo &property) const {
 		property.usage = 0;
 	}
 
-	if ((property.name == "emission_ring_radius" || property.name == "emission_ring_height" || property.name == "emission_ring_inner_radius") && emission_shape != EMISSION_SHAPE_RING) {
+	if (property.name.begins_with("emission_ring_") && emission_shape != EMISSION_SHAPE_RING) {
 		property.usage = 0;
 	}