Revert "Change TSFInputControl inputScope to AlphanumericHalfWidth (m…

…icrosoft#13028)"

This reverts commit 6e87e0b.

src/cascadia/TerminalControl/TSFInputControl.cpp

@@ -25,10 +25,8 @@ namespace winrt::Microsoft::Terminal::Control::implementation
         // InputPane is manually shown inside of TermControl.
         _editContext.InputPaneDisplayPolicy(CoreTextInputPaneDisplayPolicy::Manual);
 
-        // Set the input scope to AlphanumericHalfWidth in order to facilitate those CJK input methods to open in English mode by default.
-        // AlphanumericHalfWidth scope doesn't prevent input method from switching to composition mode, it accepts any character too.
-        // Besides, Text scope turns on typing intelligence, but that doesn't work in this project.
-        _editContext.InputScope(CoreTextInputScope::AlphanumericHalfWidth);
+        // set the input scope to Text because this control is for any text.
+        _editContext.InputScope(CoreTextInputScope::Text);
 
         _textRequestedRevoker = _editContext.TextRequested(winrt::auto_revoke, { this, &TSFInputControl::_textRequestedHandler });