Adds Light component tests (non-GPU portion) to AutomatedTesting from AtomTest (#2758)

* Fixed Vegetation Layer Spawner documentation link.

Signed-off-by: Chris Galvan <chgalvan@amazon.com>
Signed-off-by: jromnoa <jromnoa@amazon.com>

* add remaining non-GPU test portions for Light component test

Signed-off-by: jromnoa <jromnoa@amazon.com>

* make non-GPU light component test more robust

Signed-off-by: jromnoa <jromnoa@amazon.com>

* remove redundant logging, convert LIGHT_TYPES from list to dict, remove redundant f-string

Signed-off-by: jromnoa <jromnoa@amazon.com>

Co-authored-by: Chris Galvan <chgalvan@amazon.com>

AutomatedTesting/Gem/PythonTests/atom_renderer/atom_utils/atom_component_helper.py

@@ -0,0 +1,19 @@
+"""
+Copyright (c) Contributors to the Open 3D Engine Project. For complete copyright and license terms please see the LICENSE at the root of this distribution.
+
+SPDX-License-Identifier: Apache-2.0 OR MIT
+
+File to assist with common hydra component functions or constants used across various Atom tests.
+"""
+
+# Light type options for the Light component.
+LIGHT_TYPES = {
+    'unknown': 0,
+    'sphere': 1,
+    'spot_disk': 2,
+    'capsule': 3,
+    'quad': 4,
+    'polygon': 5,
+    'simple_point': 6,
+    'simple_spot': 7,
+}