[bazel] mark a few more tests as manual

ortools/graph/BUILD.bazel

@@ -776,6 +776,7 @@ cc_test(
     name = "dag_shortest_path_test",
     size = "small",
     srcs = ["dag_shortest_path_test.cc"],
+    tags = ["manual"],
     deps = [
         ":dag_shortest_path",
         "//ortools/base:dump_vars",

ortools/math_opt/cpp/BUILD.bazel

@@ -138,6 +138,7 @@ cc_library(
 cc_test(
     name = "model_test",
     srcs = ["model_test.cc"],
+    tags = ["manual"],
     deps = [
         ":key_types",
         ":linear_constraint",

ortools/sat/BUILD.bazel

@@ -633,6 +633,7 @@ cc_test(
     name = "cp_model_search_test",
     size = "small",
     srcs = ["cp_model_search_test.cc"],
+    tags = ["manual"],
     deps = [
         ":cp_model_cc_proto",
         ":cp_model_solver",
@@ -1243,7 +1244,10 @@ cc_test(
     name = "cp_model_presolve_test",
     size = "small",
     srcs = ["cp_model_presolve_test.cc"],
-    tags = ["noautofuzz"],
+    tags = [
+        "manual",
+        "noautofuzz",
+    ],
     deps = [
         ":cp_model_cc_proto",
         ":cp_model_checker",