[Release 2] [Sprint] [FE] Improve merchant matching robustness by adding Match type options: Is exactly & Contains

[JS00001]

Implement this section of the design doc https://docs.google.com/document/d/1ctUVVHhNEyPBjJveyJdbhfC7F-Kj5qChpRbD2c2qQ7g/edit?tab=t.0#bookmark=id.6wrvukypetjl

Issue Owner

Current Issue Owner: @luacmartins

[luacmartins]

I'm working on this