Consistent Case Handling and Validation for Boolean Network Intent Variables

Boolean Network Intent variables currently accept mixed-case values, such as "True" or "TRUE" alongside "true," without validation, and there is no error shown when a case variant is entered during variable creation. In addition, variable definition guidance instructs lower-case true/false while the diagnosis step presents a dropdown using upper-case True/False, creating inconsistency between the two areas. This enhancement would add validation to enforce a single consistent case format for Boolean variable values at creation time, and align the case format shown in variable definition with the case format presented in diagnosis. Standardizing case handling would reduce configuration errors and eliminate confusion for customers building and maintaining Network Intents with Boolean variables.