[Bug] open/total connection metrics for KyuubiTHttpFrontendService is always 1

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- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)

### Search before asking

- [X] I have searched in the [issues](https://github.com/apache/incubator-kyuubi/issues?q=is%3Aissue) and found no similar issues.

### Describe the bug

I have testing it at my local dev environment.
First, `cd `
then add following config to `conf/kyuubi-defaults.conf`:
```
kyuubi.frontend.protocols THRIFT_HTTP
```
then `bin/kyuubi start`.
Check metric with command `grep "thrift" work/metrics/report.json -A3`:
```
"kyuubi.thrift.http.connection.opened" : {
"count" : 1
},
"kyuubi.thrift.http.connection.total" : {
"count" : 1
}
},

```
=> opened and total should be 0

then run `bin/beeline -u "jdbc:hive2://10.xxx.xx.xxx:10010/default;transportMode=http;httpPath=cliservice"`,
check metric again:
```
"kyuubi.thrift.http.connection.opened" : {
"count" : 1
},
"kyuubi.thrift.http.connection.total" : {
"count" : 1
}
},

```
=> open and total should be 1

open another terminal and run `bin/beeline -u "jdbc:hive2://10.xxx.xx.xxx:10010/default;transportMode=http;httpPath=cliservice"`, check metric again:
```
"kyuubi.thrift.http.connection.opened" : {
"count" : 1
},
"kyuubi.thrift.http.connection.total" : {
"count" : 1
}
},
```
=> open and total should be 2

### Affects Version(s)

1.6.0

### Kyuubi Server Log Output

_No response_

### Kyuubi Engine Log Output

_No response_

### Kyuubi Server Configurations

_No response_

### Kyuubi Engine Configurations

_No response_

### Additional context

_No response_

### Are you willing to submit PR?

- [X] Yes I am willing to submit a PR!