CmdPal: search simultaneously in English and user display language

### Description of the new feature / enhancement

It should support searching user input in both the user's current display language and English, especially when searching within the application.

### Scenario when this would be used?

For example, if a user wants to launch Windows Terminal, the first word that might come to mind is “terminal.” However, if the user's display language is not English, searching for “terminal” may not return the Windows Terminal application.

This issue can be addressed by supporting combined search across both the user's display language and English.

### Supporting information

for example, https://github.com/microsoft/terminal/releases/tag/v1.24.10621.0
"1.24 brings a handful of new features and a load of bug fixes, including:
Command Palette now searches simultaneously in English and your display language (unless that language is English)."

Start by locating CmdPal's search implementation and reviewing the linked Windows Terminal v1.24 release note for the comparable behavior. Confirm how display language and English search terms are represented, then verify that searching for English terms such as “terminal” works alongside the user's display language without breaking English-only searches.

Written by the indexing model from the issue text.