Tab drag causes mousedown in tmux

### Windows Terminal version

1.13.11432.0

### Windows build number

10.0.22000.0

### Other Software

tmux 3.0a inside WSL2

### Steps to reproduce

- Open a tmux session inside WSL2 (Ubuntu 20.04.3 in my case)
- Drag the current tab downwards so it overlays the screen area (and do it quite fast)

### Expected Behavior

The tmux session should be unaffected by the drag action outside of it.

### Actual Behavior

Onmousedown / drag apparently is triggered and causes the selection to change and scroll mode to start. This only happens if you drag quite fast.

https://user-images.githubusercontent.com/5270359/170699426-7528dbdd-d5cc-4ddd-9ffc-b82d7630a4ac.mp4

The latest preview version 1.14.1452.0 also has this issue and 1.12 had it as well.

Start by reproducing the tab-drag scenario with tmux 3.0a inside WSL2, using the listed Windows Terminal and Windows build versions, and observe the selection and scroll-mode changes. The issue is done when dragging the current tab quickly over the terminal screen no longer triggers tmux's mouse handling.

Written by the indexing model from the issue text.