Agent evolution X axis overlap

[mpRegalado]

Wazuh	Elastic
4.2	7.12

Description
The agent monitoring graph's x axis labels overlap each other at small container widths. This is not an issue I could replicate with elastic version 7.10

Steps to reproduce

1. Go to Agents
2. See error

Screenshots

[mpRegalado]

Seems to be related to #3219 as a similar error appears in the console when the width is to narrow.

[mpRegalado]

Also related to #3306
In Kibana-7.12 the fix applied squishes the graph, causing the timestamps to overlap and eventually to throw console errors and fall off the screen. It's not untill a viewport width <=1200px is reached that the layout snaps into rows.
A minWidth should be applied to the flexItems that form the top section of the Agents overview and use the wrap property of EuiFlexGroup that contains them

[mpRegalado]

The label overlap is controlled by the label property filter:true.
This property can be declared where each visualization for the app is defined, generally under the directory server/integration-files/visualizations/ in the _source.visState property of the object. This is a stringified JSON object where you can add the property to params...labels