Add browser version info (#6755)

* Add browser version info

* feedback

docs/editor/vscode-web.md

@@ -175,7 +175,9 @@ Edge and Chrome today support the [File System API](https://developer.mozilla.or
 
 ### Browser support
 
-You can use VS Code for the Web in Chrome, Edge, Firefox, and Safari.
+You can use VS Code for the Web in the latest versions of Chrome, Edge, Firefox, and Safari. Older versions of each browser may not work - we only guarantee support for the latest version. 
+
+> **Tip:** One way to check the compatible browser version is to look at the version of [Playright](https://playwright.dev/) currently used for testing VS Code and review its supported browser versions. You can find the currently used Playwright version in the VS Code repo's [package.json](https://github.com/microsoft/vscode/blob/main/package.json) file at `devDependencies/@playwright/test`. Once you know the Playwright version, for example `1.37`, you can then review the **Browser Versions** section in their [Release notes](https://playwright.dev/docs/release-notes).
 
 Webviews might appear differently or have some unexpected behavior in Firefox and Safari. You can view issue queries in the VS Code GitHub repo to track issues related to specific browsers, such as with the [Safari label](https://github.com/microsoft/vscode/labels/safari) and [Firefox label](https://github.com/microsoft/vscode/labels/firefox).