[Bug] title.textStyle.ellipsis config not working

[CWS-CTRL]

Version

5.4.2

Link to Minimal Reproduction

https://codepen.io/cws-ctrl/pen/MWPyZjY

Steps to Reproduce

Problem

title.textStyle.ellipsis config not working

Read the source code and discover

Even if you show "ellipsis" set in the echarts configuration,
this operation also causes the final output to have no "ellipsis" attribute,
then you end up with the default value "..."

Scheme

You can add it to the second parameter of the createTextStyle function
ellipsis: textStyleModel.getShallow.('ellipsis')
There may be more than one error

Current Behavior

not working

Expected Behavior

docs: Ellipsis to be displayed when overflow is set to truncate.

'truncate' Truncate the overflow lines.

Environment

- OS:
- Browser:
- Framework:

Any additional comments?

Or maybe it's just me

[Ovilia]

The demo cannot run. Please consider adding an empty series.

It's nice to hear that you have figured out the solution. Please consider making a pull request!

[CWS-CTRL]

The demo cannot run. Please consider adding an empty series.

It's nice to hear that you have figured out the solution. Please consider making a pull request!

Sorry, this is an "option", "ellipsis" specifies "%%%" but gets the default value "..."

option = {
title: {
text: 'Main Title',
left: 'center',
top: 'center',
textStyle: {
fontSize: 30,
width: 100,
overflow: 'truncate',
ellipsis: '%%%'
//not working
// docs: Ellipsis to be displayed when overflow is set to truncate.
// 'truncate' Truncate the overflow lines.
},
}
};

[Ovilia]

It seems none of the ellipsis is working. See also the demo. I'm fixing this problem.