Math: implement m:limUpp upper limit converter (community)

[caio-pizzol]

What

Implement the m:limUpp (upper limit) OMML → MathML converter.

OMML: m:limUpp → m:e (base) + m:lim (limit above)
MathML: <mover> with two children
Spec: §22.1.2.56
Difficulty: Easy

How to implement

1. Create converters/upper-limit.ts
2. Map m:e → first child, m:lim → second child of <mover>
3. Register as 'm:limUpp': convertUpperLimit

Test Document

Download the test file and upload it to the SuperDoc dev app to verify your implementation renders correctly:

sd-2378-limupper.docx

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Want to work on this? Check the Contributing Guide to get started. Comment on this issue to let us know you're picking it up.

Ref: SD-2378

[linear]

IT-829