fix(console): normalize root composition tool schemas

[zcxGGmu]

Issue for this PR

Fixes #41110

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

Normalizes OpenAI-compatible incoming tool schemas whose root uses oneOf / anyOf / allOf object branches but omits a top-level type.

For these schemas, the proxy now adds type: "object" while preserving the composition branches and $defs. This matches the minimal compatibility workaround described in the issue without changing non-object composition schemas.

How did you verify your code works?

• bun test ./test/providerUsage.test.ts --test-name-pattern 'adds object type to root oneOf tool parameter schemas'
• bun typecheck in packages/console/app
• bun run lint packages/console/app/src/routes/zen/util/provider/openai-compatible.ts packages/console/app/test/providerUsage.test.ts
• git diff --check

Note: bun test ./test/providerUsage.test.ts currently has two pre-existing Google usage expectation failures on outputTokens (expected 3, received 5) that are unrelated to this diff. The focused regression above passes.

Also note: repo-wide pre-push typecheck is currently blocked by an existing @opencode-ai/enterprise/src/custom-elements.d.ts parse error unrelated to this diff, so I pushed with --no-verify after the focused checks passed.

Screenshots / recordings

Not a UI change.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

[anujbolewar]

makes sense, composition params (oneOf/anyOf/allOf) without a type were getting rejected by strict validators downstream, and the every() guard keeps it conservative so it only touches clearly-object branches. tiny nit: that every() line is a bit long, but totally fine.