Fix upside down push monitors

[kaysond]

Description

This PR fixes a regression introduced by 1.16.1 (#1428) where upside down push monitors were not handled correctly. (Fixes #1732)

Type of change

Please delete any options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Checklist

• My code follows the style guidelines of this project
• I ran ESLint and other linters for modified files
• I have performed a self-review of my own code and tested it
• I have commented my code, particularly in hard-to-understand areas
  (including JSDoc for methods)
• My changes generate no new warnings
• My code needed automated testing. I have added them (this is optional task)

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[kaysond]

@louislam can you please pick this for 1.17.0? Sorry about the regression. I didn't think to test upside down push monitors!

[Apashh]

Hey, ty for your job, i have modified this line (since 2-3 hours) in monitor.js and its works ! ;)

[louislam]

Thanks, didn't aware of it too.