[TASK] Change the API Query for the separator of the pratice-names for EQIP & CSP selector to pipeDelimited

[pengyin-shan]

Based on the OpenAPI Specification (https://swagger.io/docs/specification/v3_0/serialization/#query-parameters), the pipeDelimited style will be used as the separator for the EQIP and CSP selectors. For example, the endpoint will use a query string like: /pdl/titles/title-ii/programs/csp/state-distribution?practice_code=3 - Soil health rotation, No till|340|NIPF
instead of: ?practice_code=3%20-%20Soil%20health%20rotation,%20No%20till,2%20-%20Precision%20Ag,%20Reduced%20till,NIPF.

The backend will receive the URL in its decoded form.