Fix test naming conflict in neon extension

- Rename test method from 'test_neon' to 'test_neon_organization_lifecycle'
- Resolves duplicate test name error where both module and method had same identifier
- Ensures test_index.py runs successfully without naming conflicts

Author: Bhargavsaichinni

src/neon/azext_neon/tests/latest/test_neon.py

@@ -13,7 +13,7 @@
 class NeonScenario(ScenarioTest):
     @AllowLargeResponse(size_kb=10240)
     @ResourceGroupPreparer(name_prefix='cli_test_neon', location="centraluseuap")
-    def test_neon(self, resource_group):
+    def test_neon_organization_lifecycle(self, resource_group):
         # Test Tags: Organization CRUD, Marketplace Integration, SSO Configuration
         tags_key = 'key'
         tags_val = 'value'