Increate context detection for jobs

[microstudi]

Strengthened internal argument resolution to handle nested data structures more reliably when identifying users, organizations, and components in complex scenarios.

This is motivated by some mailer jobs that can have the user or components deeper in arguments hashes or arrays.

[Copilot]

Pull request overview

This PR strengthens Decidim::TermCustomizer::Context::JobContext argument resolution so background jobs can reliably detect organization/space/component/user even when passed inside nested arrays/hashes, and it tightens rake task specs to assert clean stderr output.

Changes:

• Add recursive argument scanning helpers in JobContext to find objects by class or via accessor methods inside nested arrays/hashes.
• Extend JobContext specs to cover nested user arguments and resolving component/space via questionnaires.
• Improve rake task specs by asserting “no stderr output” using a new not_output matcher.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
spec/spec_helper.rb	Defines not_output matcher to support chained “no stderr” assertions in specs.
spec/lib/decidim/term_customizer/context/job_context_spec.rb	Adds coverage for nested arguments and questionnaire-based context resolution.
spec/lib/decidim/tasks/decidim_term_customizer_combine_file_spec.rb	Updates task spec to assert stdout output and no stderr output.
spec/lib/decidim/tasks/decidim_term_customizer_combine_db_spec.rb	Updates task spec to assert stdout output and no stderr output.
lib/decidim/term_customizer/context/job_context.rb	Implements recursive lookup through nested argument structures and questionnaire-to-component resolution.

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