Fix DAG export bug

[ezraporter]

Description

This PR fixes a bug causing users to receive an unclear error message when trying to export data access group information when they don't have the correct privileges.

Proposed Changes

• Wrap redcap_dag_read() in try_redcapr() to gracefully handle failures
• Add block to try_redcapr() to specifically handle the insufficient privileges error message
• Add related test cases
  • This uses a new REDCap project with the API key called REDCAPTIDIER_DAG_ACCESS_API: https://redcap.chop.edu/redcap_v15.4.0/ProjectSetup/index.php?pid=75351

Screenshots

Issue Addressed

Closes #[provide issue number to link here]

PR Checklist

Before submitting this PR, please check and verify below that the submission meets the below criteria:

• New/revised functions have associated tests
• New/revised functions that update downstream outputs have associated static testing files (.RDS) updated under inst/testdata/create_test_data.R
• New/revised functions use appropriate naming conventions
• New/revised functions don't repeat code
• Code changes are less than 250 lines total
• Issues linked to the PR using GitHub's list of keywords
• The appropriate reviewer is assigned to the PR
• The appropriate developers are assigned to the PR
• Pre-release package version incremented using usethis::use_version()

Code Review

This section to be used by the reviewer and developers during Code Review after PR submission

Code Review Checklist

• I checked that new files follow naming conventions and are in the right place
• I checked that documentation is complete, clear, and without typos
• I added/edited comments to explain "why" not "how"
• I checked that all new variable and function names follow naming conventions
• I checked that new tests have been written for key business logic and/or bugs that this PR fixes
• I checked that new tests address important edge cases

[rsh52]

Thanks for adding this, all looks good to me. When you go to submit, just be sure to update NEWS.md to reflect these two bug fixes.

[rsh52]

Annoying to add a whole other database and secret for this but c'est la vie.

[rsh52]

Perfect!