tests: set monitoring interval for eio tests to 0.05s

tests: set monitoring interval for eio tests to 0.05s

Summary:
cpu usage is not an issue during test runs, we want the tests to finish
as fast as possible in all cases regardless of the cost. this resolves
the last remaining issue with eio tests where sometimes the fallback
monitor would trigger and the test suite would hang for 60+ seconds

fix T6915
Depends on D6248

Reviewers: stefan_schmidt, bu5hm4n, ManMower, devilhorns

Reviewed By: bu5hm4n, ManMower

Subscribers: bu5hm4n, cedric, #committers

Tags: #efl

Maniphest Tasks: T6915

Differential Revision: https://phab.enlightenment.org/D6249