RoborockZoneCleaningCapability could use Math.max and Math.min

[Flole998]

RIght now at in the code there is this:

Valetudo/backend/lib/robots/roborock/capabilities/RoborockZoneCleaningCapability.js

Line 25 in fe65df3

yFlippedZone[0] > yFlippedZone[2] ? yFlippedZone[2] : yFlippedZone[0],

Essentially this (and the following lines) are just own implementations of Math.max and Math.min. For better readability I suggest changing those to Math.max and Math.min.

[Hypfer]

Indeed. Thanks!

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