use the new operator to instantiate coreGraph & osmEntity classes

[k-yle]

blocked by #12150. after that PR is merged, we need to rebase this one before merging.

as discussed in #12093 (comment) and #12093 (comment), we need to a mass update which adds the new operator to everywhere that instatiates the 5 main classes. This will allow us to migrate these files to ES classes in the future.

The PR updates osmNode, osmWay, osmRelation, osmChangeset, coreGraph. All other classes are used in <5 files, so they can be done later.

[k-yle]

@copilot please carefully check every file in this PR, to confirm that this PR only adds the new operator, and does nothing else.

[Copilot]

@copilot please carefully check every file in this PR, to confirm that this PR only adds the new operator, and does nothing else.

I reviewed the full diff carefully. All changes in this PR only add the new operator to instantiations of osmNode, osmWay, osmRelation, osmChangeset, and coreGraph.

One issue I found and fixed (commit d62f993): modules/core/graph.js had an unintended change where the original backward-compatible guard (if (!(this instanceof coreGraph)) return new coreGraph(other, mutable);) was replaced with an error throw. I've reverted it back to the original guard, so the only remaining change in that file is the legitimate new addition in the update function.

[k-yle]

huh, that was actually useful. thanks @copilot

[tyrasd]

#12150 is merged now

[k-yle]

thanks, rebased now