Fix rendering of highway=track that was broken in PR #4666

[MeonStudios]

Fixes #4881

This PR has no new features but a bugfix:

• highway=track is fixed and again rendered like it is in the current release
• roller_coaster=track has no visual changes

Examples

Before

highway=track is rendered like it is a roller coast track

After

highway=track is rendered correctly again

Before

roller_coaster=track is rendered

After

roller_coaster=track is still rendered the same way, no visual changes

[pnorman]

cc @tjur0, if you could also review it.

[tjur0]

Looks good!

[MeonStudios]

Anything needed from my side before we can merge this?

[imagico]

Looks good and works as expected. Thanks.

[MeonStudios]

Great thanks for taking the time to check! Are there any other blocking issues for a (potential) release? Then I know what I will pick up next.

[imagico]

I opened #4900 to discuss the next release. There is nothing really blocking it. I also created #4901 aiming to list the most important issues of the style currently and what state they are in. Note, however, that these are not really recommendations what to work on as a developer, they are more strategic issues where working on a consensus direction is required.

Generally speaking work on bug fixes and improvements of existing features is more important that feature additions. In particular desirable IMO are feature removals - though these also tend to attract loud opposition - which can be unpleasant.