better dticks default when switching from auto to linear tickmode

[VeraZab]

https://codepen.io/veraz/pen/VqQQGj?editors=0010
also maybe related: https://github.com/plotly/streambed/issues/11864

[VeraZab]

I tried reproducing https://github.com/plotly/streambed/issues/11864, here: https://codepen.io/veraz/pen/qLoOPR?editors=0010

The y axis is not mangled up because the breadth of the data on the y axis is not wide enough, but this default still seems wrong

[gvwilson]

Hi - this issue has been sitting for a while, so as part of our effort to tidy up our public repositories I'm going to close it. If it's still a concern, we'd be grateful if you could open a new issue (with a short reproducible example if appropriate) so that we can add it to our stack. Cheers - @gvwilson