Fix copilot-setup-steps: replace reusable workflow with direct steps

[m7pr]

This PR fixes the GitHub Copilot setup workflow by replacing the reusable workflow call with direct steps, as required by GitHub Copilot's limitations for copilot-setup-steps jobs.

Changes:

• Removed uses: insightsengineering/r.pkg.template/.github/workflows/copilot-setup-steps.yaml@main
• Added direct steps for checkout, R setup, and dependency installation
• Uses actions with uses: (which is allowed) instead of reusable workflows (which are not)

This resolves the error: 'Calling a reusable workflow with the uses: keyword is not supported in copilot-setup-steps jobs.'

[github-actions]

Code Coverage Summary

Filename                          Stmts    Miss  Cover    Missing
------------------------------  -------  ------  -------  ------------------------------------------------------------------------------
R/call_utils.R                      163     125  23.31%   19-28, 65, 67, 69, 102-345, 405
R/check_selector.R                   33       0  100.00%
R/choices_labeled.R                 157      27  82.80%   67, 73, 78, 85, 101, 218-222, 226-231, 354-355, 357, 363, 390-397
R/choices_selected.R                 81      11  86.42%   211-237, 274
R/column_functions.R                  3       3  0.00%    15-18
R/data_extract_datanames.R           30       8  73.33%   15-19, 80-82
R/data_extract_filter_module.R      105      47  55.24%   95-108, 110-111, 113-130, 146-165
R/data_extract_module.R             305      67  78.03%   139, 144, 161, 164-169, 171, 190-193, 223-269, 507, 512, 688, 699-700, 778-783
R/data_extract_read_module.R        137       7  94.89%   34, 39-41, 43, 138, 155
R/data_extract_select_module.R       32      18  43.75%   29-46
R/data_extract_single_module.R       60       2  96.67%   30, 43
R/data_extract_spec.R                32       0  100.00%
R/delayed_choices.R                  34       6  82.35%   86, 95-99
R/filter_spec.R                     186       1  99.46%   279
R/format_data_extract.R              16       1  93.75%   48
R/get_dplyr_call.R                  297       0  100.00%
R/get_merge_call.R                  278      29  89.57%   31-37, 48, 214-223, 388, 404-416
R/input_checks.R                     11       2  81.82%   15-16
R/merge_data_utils.R                  2       0  100.00%
R/merge_datasets.R                  137       6  95.62%   122, 254-258
R/merge_expression_module.R          60      11  81.67%   160-165, 183, 359-364
R/Queue.R                            23       0  100.00%
R/resolve_delayed.R                  16       4  75.00%   76-79
R/resolve.R                         115      45  60.87%   46, 180-286
R/select_spec.R                      64       8  87.50%   98, 178-185
R/utils.R                            37      24  35.14%   31-44, 172-185
R/zzz.R                               3       3  0.00%    2-4
TOTAL                              2417     455  81.18%

Diff against main

Filename      Stmts    Miss  Cover
----------  -------  ------  --------
TOTAL             0       0  +100.00%

Results for commit: d82b0d3

Minimum allowed coverage is 80%

♻️ This comment has been updated with latest results

[github-actions]

Unit Tests Summary

  1 files   24 suites   6s ⏱️
194 tests 194 ✅ 0 💤 0 ❌
698 runs  698 ✅ 0 💤 0 ❌

Results for commit d82b0d3.

♻️ This comment has been updated with latest results.