fix: polish liveness health threshold (#659)

**Reason for Change**:
<!-- What does this PR improve or fix in Kaito? Why is it needed? -->

**Requirements**

- [ ] added unit tests and e2e tests (if applicable).

**Issue Fixed**:
<!-- If this PR fixes GitHub issue 4321, add "Fixes #4321" to the next
line. -->

Fixes #658 

**Notes for Reviewers**:

Signed-off-by: jerryzhuang <zhuangqhc@gmail.com>

charts/DemoUI/inference/values.yaml

@@ -31,15 +31,19 @@ resources:
     cpu: 10m
     memory: 128Mi
 livenessProbe:
-  exec:
-    command:
-      - pgrep
-      - chainlit
+  tcpSocket:
+    port: 8000
+  failureThreshold: 12
+  periodSeconds: 10
+  successThreshold: 1
+  timeoutSeconds: 1
 readinessProbe:
-  exec:
-    command:
-      - pgrep
-      - chainlit
+  tcpSocket:
+    port: 8000
+  failureThreshold: 12
+  periodSeconds: 10
+  successThreshold: 1
+  timeoutSeconds: 1
 nodeSelector: {}
 tolerations: []
 affinity: {}