[Bug] Tooltip coordinate markers created by "makeStyleCoord" are not disposed

[csisy-bt4w]

Version

5.5.0

Link to Minimal Reproduction

https://echarts.apache.org/examples/en/editor.html?code=PYBwLglsB2AEC8sDeAoWsAeBBDEDOAXMmurGAJ4gCmRA5AMYCGYVA5sAE7m0A0J6AE2aMiAbVoBZGL1i0AKgFcqM2gHUqAlXIAWClQDEOEFQGVmphdFoBdEgF8-6cjnxFUpMpRqyAbowA2SrT2jrB4VEZUhLCi_MQegsJiAIwArAAMPLAATADMmTnZACxZ2ckAHFnJualVRQDspQBs6dahHhTUdP4Q0MpxdiRtJGDAwP6QIG5xjCDU0AJywHQARsAC3KGDdgDcQA

Steps to Reproduce

1. Set the tooltip to append to the body
2. The tooltip will create these "marker points" inside the makeStyleCoord function
3. These elements will be appended to the body
4. Dispose the chart

Current Behavior

When the chart is disposed (and thus the tooltip is disposed), these marker elements are not removed from the DOM. This is kind of unexpected in a SPA, where the whole component is destroyed.

Expected Behavior

These elements should not remain cached when all charts (we currently have a single one) are disposed.

Environment

- OS: Windows 11
- Browser: Chrome 125.0.6422.114
- Framework: Angular@17

Any additional comments?

It's not that big of a deal since these are hidden, 0x0 elements, but still, unnecessary 4 elements in the DOM.

[sz-p]

I see this issue is in 5.5.2, and follow the code to zrender transformCoordWithViewport It create dom but not return.

should we add a constant class name in dom created by transformCoordWithViewport.

then query and remove those dom on tooltip dispose?