Fix phantom priority changes detected (#2702)

Author: r4victor

src/dstack/_internal/cli/commands/offer.py

@@ -84,6 +84,8 @@ def _command(self, args: argparse.Namespace):
         job_plan = run_plan.job_plans[0]
 
         if args.format == "json":
+            # FIXME: Should use effective_run_spec from run_plan,
+            # since the spec can be changed by the server and plugins
             output = {
                 "project": run_plan.project_name,
                 "user": run_plan.user,

src/dstack/_internal/cli/services/configurators/run.py

@@ -105,7 +105,7 @@ def apply_configuration(
             changed_fields = []
             if run_plan.action == ApplyAction.UPDATE:
                 diff = diff_models(
-                    run_plan.run_spec.configuration,
+                    run_plan.get_effective_run_spec().configuration,
                     run_plan.current_resource.run_spec.configuration,
                 )
                 changed_fields = list(diff.keys())