fix: monitors transform

[RichardLeite]

Describe your changes

Fix missing monitor position (x, y) and transform properties in the monitor objects sent to axctl. These values were already available in mon.metadata but were not being forwarded, causing the compositor to receive undefined for position and rotation of monitors.

This complements the earlier fix in 21bf99d ("Screenshot & Screenrecord tool now uses the right positions when monitors are transformed").

Add screenshots

Before — incorrect monitor positioning/disposition:

After — monitors properly positioned with correct transform:

Does this change any existing behavior?

Yes — monitors now report their correct x, y, and transform properties to axctl. Existing behavior is preserved for setups without transform metadata (parseInt falls back to 0).