Propagate isParameterType through input-only types

[braeden]

FLUP on #392

Apply the approach in #392 recursively to all types that are solely marked as inputs. Again, this is not an API break since it widens the contract for consumers interacting with TS clients.

This is still not as full-fledged as as the readonlyInterfaces gradle flag & requires another recursive pass through the types.

Testing

In the large service I ran this against (across 3x different modules), we converted ~25% of the array types emitted in the repo into ReadonlyArray, this is a big difference for the surface area of callers and the need to mutably cast.

  ┌────────┬───────────────┬────────────────┬──────────┐                                                                                                                                             
  │ Module │ Substitutions │ Total list/set │ Coverage │
  ├────────┼───────────────┼────────────────┼──────────┤                                                                                                                                             
  │ _      │           360 │           1435 │      25% │                                                                                                                                             
  ├────────┼───────────────┼────────────────┼──────────┤                                                                                                                                             
  │ _      │            52 │            201 │      26% │                                                                                                                                             
  ├────────┼───────────────┼────────────────┼──────────┤
  │ _      │             8 │             44 │      18% │                                                                                                                                             
  ├────────┼───────────────┼────────────────┼──────────┤    
  │ Total  │           420 │           1680 │      25% │
  └────────┴───────────────┴────────────────┴──────────┘

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Propagate isParameterType through input-only types

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