fix(pg_stat_monitor): address review comments for latestVersion and lib_name parameters

Author: yvan-sraka

nix/ext/pg_stat_monitor.nix

@@ -19,7 +19,7 @@ let
   # Derived version information
   allVersionsList = lib.naturalSort (lib.attrNames supportedVersions);
   versions = builtins.filter (v: (allVersions.${v}.pgUpgradeCompatible or true)) allVersionsList;
-  latestVersion = lib.last allVersionsList;
+  latestVersion = lib.last versions;
   numberOfVersions = builtins.length versions;
   # Filter to only build pg_upgrade compatible versions
   pgUpgradeCompatibleVersions = lib.filterAttrs (

nix/ext/tests/pg_stat_monitor.nix

@@ -187,7 +187,7 @@ self.inputs.nixpkgs.lib.nixos.runTest {
       server.wait_for_unit("multi-user.target")
       server.wait_for_unit("postgresql.service")
 
-      test = PostgresExtensionTest(server, extension_name, versions, sql_test_directory, support_upgrade, ext_schema)
+      test = PostgresExtensionTest(server, extension_name, versions, sql_test_directory, support_upgrade, ext_schema, lib_name)
       test.create_schema()
 
       with subtest("Check upgrade path with postgresql 15"):