Merge pull request from GHSA-xc5m-v23f-pgr7
Unauthenticated users can modify NVDAs system profile for symbol pronunciation. This affects all users first (sign-on) interaction with the system. This action is intended to be limited to signed in users with administrator privileges.
If unexpected symbols are being replaced, a user may experience a denial of service. For example, being unable to sign-in to Windows.
The symbol pronunciation dialog is disabled in secure mode
1. Assign a gesture to "Shows the NVDA symbol pronunciation dialog".
2. Copy the config to secure screens via General Preferences
3. Run NVDA in secure mode with `-s`
4. Use the input gesture, note that the dialog is not opened
