Use type_owner for cross-schema type lookups

[yahonda]

Summary

• Use argument_metadata[:type_owner] instead of @schema_name when querying ALL_PLSQL_TYPE_ATTRS, ALL_TAB_COLUMNS, ALL_PLSQL_COLL_TYPES, and ALL_COLL_TYPES in get_field_definitions and get_element_definition
• This allows types defined in another schema to be resolved correctly for cross-schema type references
• Grant create type, create procedure, and unlimited tablespace to the arunit test user for cross-schema testing

Test plan

• Verify test workflow passes (Oracle 23c Free)
• Verify test_11g workflow passes (Oracle 11g XE)
• New test: function with cross-schema type parameter

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR fixes cross-schema PL/SQL type resolution by using the actual type owner from argument metadata when looking up composite type details, ensuring procedure/function parameters can reference types owned by other schemas.

Changes:

• Update composite type metadata queries to use argument_metadata[:type_owner] instead of @schema_name for type lookups.
• Expand the secondary test user (arunit) privileges to support creating types/procedures needed by specs.
• Add an RSpec case that creates a type in a second schema, grants access, and validates cross-schema function discovery/execution.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
spec/support/create_arunit_user.sql	Grants additional privileges to the secondary schema user so cross-schema type tests can create required objects.
spec/plsql/procedure_spec.rb	Adds an integration spec covering cross-schema object type parameters and execution.
lib/plsql/procedure.rb	Fixes cross-schema composite type lookups by querying dictionary views using type_owner from all_arguments.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

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