Fix: Filtering works with group monitor

[chakflying]

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Description

Fixes #3445

• Refactor the process of search and filtering to a single loop over the monitor list
• Renamed prop isSearch to showPathName to be more clear on functionality

Unfortunately, enabling search/filtering will flatten all group structures. Doesn't look amazing but again can't think of an easy fix.

Also fixes bug:

• monitor.active now returns true/false instead of 1/0. Update sort function to reflect this.

Type of change

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

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)

Screenshots (if any)

[Computroniks]

Just some (IMO) odd looking whitespace