fix(awe-builder): align builder action names and dead XSD values with the client contract

Problem to solve

The screen contract has values that no client engine understands:

  • The builder enum Action emits check-records-selected for CHECK_RECORDS_GENERATED (the contract value is check-records-generated), and select-first-rows / select-last-rows for SELECT_FIRST_ROW / SELECT_LAST_ROW (the contract values are singular) (awe-builder Action.java:24,60-61). Java code that uses these builders sends actions that neither engine handles.
  • XSD values with no behaviour in either engine: forward, check-leaf-selected, check-parent-expanded, get-locals; the elements frame and javascript; the criteria component progress.
  • The AngularJS engine has no handler for toggle-class, which the XSD and the builder offer (the React engine handles it).
  • The React engine registers targetMessage while the contract name is target-message.

Goals

  • Every value the builders emit is a value of the contract, and every value of the contract is handled by both engines or removed from it (with a deprecation note in the migration guide).

What does success look like, and how can we measure that?

  • The builder enum emits the contract values (tests)
  • A decision for each dead XSD value: implemented in both engines, or deprecated and removed
  • toggle-class handled by the AngularJS engine, or removed
  • A test compares the XSD values, the builder values and the actions handled by each engine (with #810)

Related: #794 (closed) (T6 parity report https://claude.ai/artifact/9ejpnaA5gzxNRHfzyBTCtJ), #810, #763 (closed) (migration guide).