[Lens] Axis setting visible under Breakdown dimension

[nickofthyme]

Kibana version:

main/8.16

Describe the bug:

When using the Collapse by option on an Intervals Breakdown aggregation, the option to set the Axis side appears. This option has no affect for as the breakdown does not directly link to any axis.

Steps to reproduce:

1. Load sample logs data
2. Create a Lens xy charts with count of records
3. Create a breakdown metric with Intervals of bytes.
4. Set Collapse by to Average
5. Notice the new Axis side option under the Appearance section

Expected behavior:

The option for Axis side should only exist on horizontal and vertical axis dimensions and hidden otherwise.

Screenshots (if relevant):

[elasticmachine]

Pinging @elastic/kibana-visualizations (Team:Visualizations)

[nickofthyme]

Additionally, the series color option should be disabled when collapse is enabled. The color in this case is always applied by the Vertical axis dimension.