[CI/Build] Move L1/E2E coverage to weekly and split scheduled L4/L5 pipelines (#6311)

Signed-off-by: wangyu <410167048@qq.com>
Signed-off-by: [Your Name] <your.email@example.com>
Co-authored-by: amy-why-3459 <wuhaiyan17@huawei.com>

tests/dfx/perf/tests/test_qwen3_omni_multi_replicas.json

@@ -10,7 +10,7 @@
           "num_cards": 3
         }
       },
-      "full_model",
+      "slow",
       "omni"
     ],
     "server_params": {

tests/dfx/perf/tests/test_qwen3_omni_vllm_text.json

@@ -10,7 +10,7 @@
           "num_cards": 2
         }
       },
-      "full_model",
+      "slow",
       "omni"
     ],
     "server_params": {