bug: the routes with vars parametes , whos max match is not supported.(route的vars匹配规则不支持最大匹配)

### Current Behavior

the routes with vars parametes , whos max match is not supported.

### Expected Behavior

i respected match the route of test_route_2.

### Error Logs

```
init.lua:514: http_access_phase(): matched route: {"key":"\/apisix\/routes\/1","createdIndex":152570,"modifiedIndex":218593,"value":{"vars":[["http_parameter1","~~","value[2,3]"]],upstream":{"type":"roundrobin","scheme":"http","hash_on":"vars","parent":{"key":"\/apisix\/routes\/1","createdIndex":152570,"modifiedIndex":218593,"value":"table: 0x7f009f38a618","clean_handlers":"table: 0x7f009f1f3f70","has_domain":true,"update_count":0,"orig_modifiedIndex":218593},"nodes":[{"host":"www.test1.com","weight":1}],"pass_host":"node"},"priority":0,"uri":"\/*","create_time":1673344005,"name":"test_route_2","plugin_config_id":"plugin-config","status":1,"id":"1"},"clean_handlers":{},"has_domain":true,"update_count":0,"orig_modifiedIndex":218593},
```

### Steps to Reproduce

If i add two routes at the same time
**test_route_1：**

```shell
curl http: //127.0.0.1:9180/apisix/admin/routes/1 -H 'X-API-KEY: 88888' -X PUT -i -d '
{
"name": "test_route_1",
"vars": [
[
"http_parameter1",
"~~",
"value[2,3]"
]
],
"plugin_config_id": "plugin-config",
"upstream": {
"pass_host": "node",
"nodes": {
"www.test1.com": 1
},
"scheme": "http",
"type": "roundrobin",
"hash_on": "vars"
},
"status": 1,
"priority": 0,
"uri": "\/*"
}'
```

**test_route_2：**

```shell
curl http://127.0.0.1:9180/apisix/admin/routes/2 -H 'X-API-KEY: 88888' -X PUT -i -d '
{
"name": "test_route_2",
"vars": [
[
"http_parameter1",
"~~",
"value[2,3]"
],
[
"http_parameter2",
"==",
"2"
]
],
"plugin_config_id": "plugin-config",
"priority": 0,
"upstream": {
"pass_host": "node",
"nodes": {
"www.test2.com": 1
},
"type": "roundrobin",
"scheme": "http"
},
"uri": "/*",
"status": 1
}'
```

then i take a request，like：

```shell
curl 127.0.0.1:9080 -H "parameter1: value2" -H "parameter2: 2"
```
it will always match the route of test_route_1,but i respected match the route of test_route_2.

### Environment

- APISIX version (run `apisix version`):3.0.0
- Operating system (run `uname -a`):CentOS Linux release 7.9.2009 (Core)
- OpenResty / Nginx version (run `openresty -V` or `nginx -V`):openresty/1.21.4.1
- etcd version, if relevant (run `curl http://127.0.0.1:9090/v1/server_info`):3.0.0
- APISIX Dashboard version, if relevant:
- Plugin runner version, for issues related to plugin runners:
- LuaRocks version, for installation issues (run `luarocks --version`):