test(tests/lean/run): add more tests

tests/lean/run/app_builder4.lean

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+import data.list
+
+constants f : nat → nat → nat
+constants a b : nat
+axiom H2 : a = b
+set_option pp.all true
+
+#app_builder congr (eq.refl (f a)), H2
+
+constants g : ∀ {A :Type}, A → A → A
+variables A : Type
+variables l₁ l₂ l₃: list A
+variables H : l₂ = l₃
+
+#app_builder congr (eq.refl (g l₁)), H
+#app_builder congr_arg (g l₁), H