[Feature]: Improve Alt Hotbuilding and allow hotbuild keys to filter units when no builder is selected.

[vjt4]

Describe the Feature

No left click choosing/right click confirmation when alt-hot building with multiple tech levels available.
Build highest available or what is displayed on current tech tab in one click.

Expected Behavior

No left click choosing/right click confirmation when alt-hot building with multiple tech levels available.
Build highest available or what is displayed on current tech tab in one click.
Support shift+5
Keep old functionality for factory templates.

When no builders are selected filter units with the same key used to build them.

Screenshots

No response

Additional context

No response