Characters typed into terminal when switching to other windows/tabs

### Windows Terminal version

1.18.3181.0

### Windows build number

10.0.22631.0

### Other Software

PowerShell 7.4.0 (from microsoft store)

### Steps to reproduce

From the first open tab in Windows Terminal, Alt-tab or use the mouse to switch to another window, or another tab within Windows Terminal.

### Expected Behavior

Nothing typed into the terminal

### Actual Behavior

The first time I switch away, it writes a `[` into the terminal. If I switch back, it writes `O[`, and if I tab out again it writes `I[`, and continues to do that if I tab in and out repeatedly, so I end up with something like `[O[I[O[I[O[I[O[I[O[I[O[I[O[I[O[I` in my terminal.

It's entirely possible that I (or my toddler) accidentally mashed some key combination to put the terminal in some unexpected mode; this would be the most likely explanation since neither Windows Terminal nor PowerShell have been updated recently, however I'm at a loss as to what exactly could have done this.

Reproduce the reported Alt-Tab and Windows Terminal tab-switching steps using Windows Terminal 1.18.3181.0, PowerShell 7.4.0, and Windows 10.0.22631.0; no source file or test is identified in the issue. Done means switching windows or tabs no longer inserts characters into the terminal.

Written by the indexing model from the issue text.