Is your feature request related to a problem? Please describe.
When I set initial_window_size in eframe::NativeOptions with large value (bigger than the logical size of the monitor), the size is chop by largest_monitor_point_size, this blocks some cases like displaying a workspace screenshot on multiple monitors, like #3185, or display high resolution pic/videos in actical size. I'm curious about the reason behind it.

Describe the solution you'd like
maybe add a option like unbounded_size: bool the disable the max window restriction?

Describe alternatives you've considered
N/A

Additional context
An simple example(all values are logical)

with this setup, a window across all screen should have the size of 3000x1920. Setting initial_window_size to 3000x1920 , initial_window_pos to 0, 0, a window at 0, 0 with size 1920x1080 wat created in my case.