[Bug] Monaco editor on firefox ignores first input after highlighting word via keyboard

Reproducible in vscode.dev or in VS Code Desktop?

• Not reproducible in vscode.dev or VS Code Desktop

Reproducible in the monaco editor playground?

• Not reproducible in the monaco editor playground

Monaco Editor Playground Link

https://microsoft.github.io/monaco-editor/playground.html?source=v0.55.1#example-creating-the-editor-hello-world

Monaco Editor Playground Code

const value = /* set from `myEditor.getModel()`: */ `function hello() {
	alert('Hello World');
}`;

// Hover on each property to see its docs!
const myEditor = monaco.editor.create(document.getElementById("container"), {
	value,
	language: "javascript",
	automaticLayout: true,
});

Reproduction Steps

1. Open link in Firefox Developer Edition
2. Highlight a word with Ctrl-Shift-Left
3. Type anything - It will ignore the first keystroke.

Actual (Problematic) Behavior

Skipping first keystroke.

Expected Behavior

Not skipping any keystroke

Additional Context

https://github.com/user-attachments/assets/3c93f79d-7aca-4305-b0bf-ea775683c2b4

Start with the provided Monaco Editor Playground link and reproduce the Ctrl-Shift-Left selection followed by typing in Firefox Developer Edition. Trace the editor's keyboard-input handling from that reproduction; done means the first typed character is inserted after highlighting a word, without changing the behavior in the stated comparison environments.