js pages auto changes contains operator to equal

[vikasdamodar]

When created a filter with contains operator and tries to open it for edit, the operator is showing as an equal operator and that is being saved in DB as well. Also, value is not displaying in the value field.

Because of this issue #141 we have to override forms.

On the FE HTML page, the form is available with the exact selection tag, But somehow js page selecting the operator default

SS