exp run: Fix --dry option.

Closes #8831

dvc/repo/experiments/executor/base.py

@@ -499,9 +499,9 @@ class BaseExecutor(ABC):
                     git_remote,
                     repro_force,
                 )
-            info.result_hash = exp_hash
-            info.result_ref = ref
-            info.result_force = repro_force
+                info.result_hash = exp_hash
+                info.result_ref = ref
+                info.result_force = repro_force
 
         # ideally we would return stages here like a normal repro() call, but
         # stages is not currently picklable and cannot be returned across

tests/func/experiments/test_experiments.py

@@ -748,3 +748,9 @@ def test_experiment_unchanged(tmp_dir, scm, dvc, exp_stage):
     dvc.experiments.run(exp_stage.addressing)
 
     assert len(dvc.experiments.ls()["master"]) == 2
+
+
+def test_experiment_run_dry(tmp_dir, scm, dvc, exp_stage):
+    dvc.experiments.run(exp_stage.addressing, dry=True)
+
+    assert len(dvc.experiments.ls()["master"]) == 0