Fix window positioning issue when tiling maximized windows from popup

[kyledross]

When a maximized window is selected from the tiling popup, it would be
resized correctly but positioned in the center of the screen instead of
the intended edge location. This occurred both when windows were on the
same workspace and across different workspaces.

The issue is caused by a timing problem when the tile() function
unmaximizes a window - the window actor's position isn't updated before
move_resize_frame() tries to position it.

Solution:

• Detect when a window is maximized or changing workspaces
• Add a brief delay (100ms) before tiling to allow state transitions
• After tiling, verify the window position using the size-changed signal
• Correct the position if needed using move_frame()
• Include a 200ms fallback timeout in case the signal doesn't fire

This ensures windows are positioned correctly regardless of their initial
state or workspace location.