Add global wildcard filtering support (e.g. a*b*c*)

[PPC2021]

Is your feature request related to a problem? Please describe.
There’s no simple built-in way to do a fast “search across rows” using wildcard patterns like abc* (ordered, non-contiguous matching). Right now this requires custom filtering code outside the control, which is repetitive and easy to get wrong, especially with large datasets.
Describe the solution you'd like
Add optional built-in support for a global wildcard filter using * syntax (e.g. abc*) that matches values in order across all columns (or a configurable set). This should be efficient and work well with large, virtualized tables.
Describe alternatives you've considered

Custom predicate filtering on the ItemsSource
Flattening each row into a search string
Regex-based matching
Filtering at the database layer

All of these work, but add boilerplate and inconsistency across apps.
Additional context
This style of filtering matches common expectations from Excel and SQL (LIKE '%a%b%c%') and would be very useful for data-heavy WinUI 3 applications.