Disable emoji ime when screenReaderMode is on

Fixes #3467

Author: Tyriar

src/browser/Terminal.ts

@@ -1180,7 +1180,9 @@ export class Terminal extends CoreTerminal implements ITerminal {
    * @param ev The input event to be handled.
    */
   protected _inputEvent(ev: InputEvent): boolean {
-    if (ev.data && ev.inputType === 'insertText') {
+    // Only support emoji IMEs when screen reader mode is disabled as the event must bubble up to
+    // support reading out character input which can doubling up input characters
+    if (ev.data && ev.inputType === 'insertText' && !this.optionsService.options.screenReaderMode) {
       if (this._keyPressHandled) {
         return false;
       }