{lyn8578} adding UX for assinging a Python scene builder (#7551)

* {lyn8578} adding UX for assinging a Python scene builder

Signed-off-by: Allen Jackson <23512001+jackalbe@users.noreply.github.com>

* improved the Reset and Assign script logic

Signed-off-by: Allen Jackson <23512001+jackalbe@users.noreply.github.com>

* GUI updates to highlight the scene script


Signed-off-by: Allen Jackson <23512001+jackalbe@users.noreply.github.com>

* save off the script file name instead of holding onto the rule
update the header display name separate from setting the scene

Signed-off-by: Allen Jackson <23512001+jackalbe@users.noreply.github.com>

Code/Tools/SceneAPI/SceneData/Rules/ScriptProcessorRule.cpp

@@ -21,16 +21,6 @@ namespace AZ
     {
         namespace SceneData
         {
-            const AZStd::string& ScriptProcessorRule::GetScriptFilename() const
-            {
-                return m_scriptFilename;
-            }
-
-            DataTypes::ScriptProcessorFallbackLogic ScriptProcessorRule::GetScriptProcessorFallbackLogic() const
-            {
-                return m_fallbackLogic;
-            }
-
             void ScriptProcessorRule::Reflect(AZ::ReflectContext* context)
             {
                 AZ::SerializeContext* serializeContext = azrtti_cast<AZ::SerializeContext*>(context);