Make books use PTX generate templates for student pages by default

[ascholerChemeketa]

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[Copilot]

Pull request overview

This PR changes the default behavior for the use_pretext_student_pages course attribute so that student pages use the PreTeXt-generated templates by default, and centralizes the “string is true” coercion logic in a shared CRUD helper.

Changes:

• Added course_attr_is_true() helper to interpret course attribute values as booleans.
• Updated book, assignment-student, and admin-instructor routers to use the helper and default use_pretext_student_pages to True.
• Exported the new helper via rsptx.db.crud for reuse.

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
components/rsptx/db/crud/course_attrs.py	Adds a shared boolean-coercion helper for course attributes.
components/rsptx/db/crud/init.py	Re-exports the new helper from the CRUD package.
bases/rsptx/book_server_api/routers/course.py	Switches use_pretext_student_pages detection to the helper and defaults it on.
bases/rsptx/assignment_server_api/routers/student.py	Switches use_pretext_student_pages detection to the helper and defaults it on (two call sites).
bases/rsptx/admin_server_api/routers/instructor.py	Makes the admin course settings view default the toggle on via the helper.

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[Copilot]

Pull request overview

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