[bug] TextExtractor: cleared shortcut still causes system conflict

### Microsoft PowerToys version

0.97.0

### Installation method

WinGet

### Area(s) with issue?

TextExtractor

### Steps to reproduce

Clear whatever activation shortcut was for TextExtractor, it doesn't matter if it conflicted with anything or not.
[PowerToysReport_2026-01-21-20-52-35.zip](https://github.com/user-attachments/files/24778003/PowerToysReport_2026-01-21-20-52-35.zip)

### ✔️ Expected Behavior

No shortcut conflict.

### ❌ Actual Behavior

Conflict with a system shortcut, even though the TextExtractor activation shortcut is not set.

### Additional Information

OS: Windows 11 IoT Enterprise LTSC, version 24H2 (OS Build 26100.7623)
.NET: Windows Desktop Runtime 8.0.23/9.0.12/10.0.2
Language: English (US)
Installation: User
Admin: yes

### Other Software

N/A

Start by reproducing the issue in the TextExtractor area on Windows 11 with the activation shortcut cleared, using the attached PowerToys report for context. Trace how the cleared shortcut is checked for system conflicts; done means clearing the shortcut no longer reports a conflict.

Written by the indexing model from the issue text.