Enable GraphQL replay for wildcard and bare leaf field selections

[Copilot]

Two GraphQL replay scenarios were disabled because the harness couldn't generate valid queries when requestedFields used wildcard patterns (legs.*) or selected object-typed fields as bare leaves (legs).

Changes

• Wildcard observation — mergeObservedSelection now handles *-terminated paths by capturing the parent field's full value, so the schema observer sees the data and infers proper types
• Selection tree resolution — New resolveSelectionsAgainstSchema expands both wildcards and bare leaf object-typed fields to their schema sub-fields before rendering the GraphQL query:

fields: ["id", "legs.*"]  →  { id legs { duration distance } }
fields: ["id", "legs"]    →  { id legs { name } }

• Remove disable: ["graphql"] from both sparse fieldset scenarios

Result: 381 pass / 0 skip (was 379 pass / 2 skip).

Original prompt

finish the testing harness Migration in Bridge metapackage.

we have some graphql tests disabled as it's hard the deduct the schema from for partial results

we need to replace the actual return type with JsonObject when user asks for a filed that can have subfields

and we need to generate a correct fields query in case the field is selected as legal.*

so one case needs a custom query generation and one also needs custom schema for the test case

after this is done we can delete the disabled field from the test runner harness.

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