Tabs do not align to tab stops when emoji are used

<!-- ⚠️⚠️ Do Not Delete This! bug_report_template ⚠️⚠️ --> <!-- Please read our Rules of Conduct: https://opensource.microsoft.com/codeofconduct/ --> <!-- 🕮 Read our guide about submitting issues: https://github.com/microsoft/vscode/wiki/Submitting-Bugs-and-Suggestions --> <!-- 🔎 Search existing issues to avoid creating duplicates. --> <!-- 🧪 Test using the latest Insiders build to see if your issue has already been fixed: https://code.visualstudio.com/insiders/ --> <!-- 💡 Instead of creating your report here, use 'Report Issue' from the 'Help' menu in VS Code to pre-fill useful information. --> <!-- 🔧 Launch with `code --disable-extensions` to check. --> Does this issue occur when all extensions are disabled?: Yes <!-- 🪓 If you answered No above, use 'Help: Start Extension Bisect' from Command Palette to try to identify the cause. --> <!-- 📣 Issues caused by an extension need to be reported directly to the extension publisher. The 'Help > Report Issue' dialog can assist with this. --> - VS Code Version: 1.74.3 - OS Version: macOS 13.1 Steps to Reproduce: 1. Copy this text into VS Code: ``` Hello There Hello👋 There ``` 2. Observe that the "There" text on the line with the emoji is shifted to the left: <img width="185" alt="Screenshot 2023-01-24 at 11 01 40 PM" src="https://user-images.githubusercontent.com/1646875/214483997-5d2d5e09-472f-4f49-8272-a16b2fd0e30e.png"> 3. Speculation: My guess is that this is caused by the emoji being between 1 and 2 characters wide, but it "takes up" 2 characters of the tab's width, so the tab is displayed with one character of width, which is wrong. 4. The desired behavior is that the "There" text is aligned, just like on GitHub. A tab's width should not be calculated based on the characters to the left of it, it should only ever have its right edge at the next tab stop, such that the text to its right starts at the next tab stop.