[Bug] textStyle is invalid when both formatter and richText renderMode are used in the tooltip

### Version

5.4.1

### Link to Minimal Reproduction

https://echarts.apache.org/examples/zh/editor.html?code=PYBwLglsB2AEC8sDeAoWsA2BTA5l6AJgFzJrqxigkBEARsGJQLbUA0Z6BAhmFyQNrVA8IaBEFWoBdMgF926SsAyQQJVOQoAnCDjzqA8tBrQYWNh1hcMAdy4BPAM4BlABbBLAYRhh8YEmHUBXLFlyEGA7CEgYEgAzf2gAY0joAApwAEpSNXR1LDB_dTh-cH4ABnFWWABGAGYygG4zGTMcwix1AFlgAiwaTXinABUsAA8wUzVo4HUmHi91EgADABEePmR4qQXguRGwBzAbbBUzdEnoPYgALx7YAFYS7dgm9GfYYYBBYYg7Y7UDkBu1EgTBMjy4XzsAAVgBBzm1flkAG4WQI0ABMJUqADYALSVEo4gDs4yydmgXGUGkCj3QGC4tCwGARWVgdhcll8ASCJ3Ik2ms3hsFiCSSqS46i4TDsGVULPIOTyBVgWH64rAdgAdHyZmAtVMdQMICDkgByGzmmw49rtHEEAgmiogcWSzXIjCBNINOVPHmvNROLiEI6ZOVs1ycwK-xqPOwgDARAAysJusrUYY5QosdiwjWkwRsn2-zIoNgBNDdgRJ6HB30N8QA1sX0LDwt0Izm1H7WXHE8mm6z2TEsx3yF2a3YE_TGf2WxA21SRy9HpcSPi82QcJpiCG5FQqvjHthoj4qrdHpocE4T5Uz2YnFgtFfV1iSuv0NnNFgfrB-KnYOSQRoQBCK0AfaNAAdTQA7YyrEsy1gah42gUEzDsJhgAYJx2xjGwmHoJk4PiCB1HibBoLsbDcIcK4blvNNJR7aAcBoLhETaLg8GgiIsCYfZDhTHl4gUKYaAAYgADhVLEuAIaho2Q3gGyY6DxSwLgeODJAu24XgBB5QQMWxPECQAFjYWAsUqcpdOofTcXxHFblM25qkslk9MxWyCSxUyjMJFysjcgy7OJCojLRPy1ACjycVE7yyhpH9rPcwycQATm8rFwvISLkvxbyUsy9BsrsypKm80SCoSmycrRRyjMkNR6qeCo_wAwFQMg6D_kBBCkLTVD0MwuSuAUuCuFI8iFBoAiiJIrCcIUSjrhIGjyDsOiEMY0aWIldjHk47iDnU_jBPmODhIILFRLRLEatktRlNUw6U001YdNcxLAuM0zqjC-KioJByQriqyqrsryKmqOq_o-qLgtgWoKv-6LvuB97QYJNKIahkGkuKkpvuxtHcYJErvtuRGYeq2LGvQRqpEkKQgA&_source=echarts-doc-preview&renderer=svg

### Steps to Reproduce

1. use richText renderMode
2. use formatter
3. add textStyle

```js
tooltip: {
renderMode: "richText",
formatter: `Data: {c}`,
textStyle: {
fontSize: 50,
},
},
```

### Current Behavior


### Expected Behavior


The same style as when using html renderMode
### Environment

```markdown
- OS:macOS Monterey
- Browser:Chrome 96.0.4664.55
- Framework:none
```

### Any additional comments?

_No response_