Surround Input mode (`ys` in Normal or `S` in Visual) doesn't recognize dollar sign

Description

When trying to surround a piece of text in dollar signs (such as starting a math environment for a markdown file) the dollar sign isn't recognized and instead snaps me back into Normal mode. The Surround plugin is enabled, and this works for other characters (", ', (), etc. This is supposed to work in Vim (as suggested by StackOverflow posts)

To Reproduce

Option A (normal mode)

• 1. Enter an editor in normal mode
• 2. Type ys[motion]$ with any motion (for example, ysiw$)
• 3. Watch as nothing happens (except maybe the cursor moving)

Option B (visual mode)

• 1. Enter an editor in visual mode (using v, V or <C-v> from normal mode)
• 2. Make a selection (for example iw)
• 3. Type S to enter Surround Input mode
• 4. Type $
• 5. Watch as you are put in normal mode with no dollar signs anywhere you expected

Expected behavior

The dollar signs should appear around the selected text thanks to the Surround plugin, as it happens with other characters.

Environment

• VsCodeVim version: 1.27.2
• VSCode version: 1.86.1
• OS: Windows 11 Home x64 23H2, build 22631.3155

Start by tracing the Surround Input handling reached from ys in Normal mode and S in Visual mode, then reproduce the issue by entering $ after a selection or motion. Done means dollar signs surround the selected text in both modes without returning to Normal mode, while existing surround characters continue to work.