UX Workflow improvements for Physics Materials (#1237)

- Added button to PhysX Collider Component in PhysX Mesh's field to open FBX Settings.
- Added button Material Selection to open the physics material library in Asset Editor.
- Default Material in PhysX configuration is read only and consistent with the text in combo boxes.
- Material configuration field "Surface Type" renamed to "Name"
- Fixed bug in EditorColliderComponent where the material selection was not updated when changing the library.
- Fixed bug where the materials selection was not set to default when a physics material from the asset was not found in the library.
- Added attributes 'BrowseButtonEnabled' and 'BrowseButtonVisible' to PropertyAssetCtrl.
- Updated physx configuration setreg files of AutomatedTesting project.

Gems/PhysX/Code/Editor/ConfigStringLineEditCtrl.cpp

@@ -219,6 +219,14 @@ namespace PhysX
                 GUI->setMaxLen(maxLen);
             }
         }
+        else if (attrib == AZ::Edit::Attributes::ReadOnly)
+        {
+            bool isReadOnly = false;
+            if (attrValue->Read<AZ::Crc32>(isReadOnly))
+            {
+                GUI->setEnabled(!isReadOnly);
+            }
+        }
         else if (attrib == Physics::MaterialConfiguration::s_stringGroup)
         {
             AZ::Crc32 uniqueGroup;