Fix one selector in tm_shift_by_grade

[osenan]

Pull Request

Part of #1440
Companion #1441

While reviewing this PR I found that one e2e test on the edited files was failing.
The fix was simple, I was working on a similar fix for g_pp modules.

Please test it with devtools::test(filter = "tm_t_shift_by")

[github-actions]

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Unit Tests Summary

  1 files  ±0   71 suites  ±0   1m 21s ⏱️ -1s
734 tests ±0  155 ✅ ±0  579 💤 ±0  0 ❌ ±0 
874 runs  ±0  176 ✅ ±0  698 💤 ±0  0 ❌ ±0 

Results for commit fea280d. ± Comparison against base commit d200e5f.

[github-actions]

Unit Test Performance Difference

Test suite performance difference

Test Suite	$Status$	Time on main	$±Time$	$±Tests$	$±Skipped$	$±Failures$	$±Errors$
shinytest2-tm_a_gee	💔	$0.23$	$+3.43$	$0$	$0$	$0$	$0$
shinytest2-tm_a_mmrm	💔	$0.66$	$+7.47$	$0$	$0$	$0$	$0$
shinytest2-tm_g_barchart_simple	💔	$0.33$	$+2.58$	$0$	$0$	$0$	$0$
shinytest2-tm_g_ci	💔	$0.20$	$+1.12$	$0$	$0$	$0$	$0$
shinytest2-tm_g_forest_rsp	💔	$0.25$	$+2.58$	$0$	$0$	$0$	$0$
shinytest2-tm_g_ipp	💔	$0.19$	$+2.69$	$0$	$0$	$0$	$0$
shinytest2-tm_g_km	💔	$0.38$	$+3.03$	$0$	$0$	$0$	$0$
shinytest2-tm_g_lineplot	💔	$0.14$	$+1.06$	$0$	$0$	$0$	$0$
shinytest2-tm_g_pp_adverse_events	💔	$0.25$	$+1.82$	$0$	$0$	$0$	$0$
shinytest2-tm_g_pp_patient_timeline	💔	$0.37$	$+4.64$	$0$	$0$	$0$	$0$
shinytest2-tm_g_pp_therapy	💔	$0.33$	$+7.04$	$0$	$0$	$0$	$0$
shinytest2-tm_g_pp_vitals	💔	$0.16$	$+1.19$	$0$	$0$	$0$	$0$
shinytest2-tm_t_abnormality	💔	$0.13$	$+1.11$	$0$	$0$	$0$	$0$
shinytest2-tm_t_abnormality_by_worst_grade	💔	$0.12$	$+1.30$	$0$	$0$	$0$	$0$
shinytest2-tm_t_ancova	💔	$0.37$	$+1.98$	$0$	$0$	$0$	$0$
shinytest2-tm_t_binary_outcome	💔	$0.14$	$+1.36$	$0$	$0$	$0$	$0$
shinytest2-tm_t_events_by_grade	💔	$0.13$	$+1.44$	$0$	$0$	$0$	$0$
shinytest2-tm_t_events_summary	💔	$0.11$	$+2.37$	$0$	$0$	$0$	$0$
shinytest2-tm_t_exposure	💔	$0.13$	$+3.01$	$0$	$0$	$0$	$0$
shinytest2-tm_t_pp_laboratory	💔	$0.22$	$+1.43$	$0$	$0$	$0$	$0$
shinytest2-tm_t_pp_prior_medication	💔	$0.16$	$+1.49$	$0$	$0$	$0$	$0$
shinytest2-tm_t_shift_by_arm	💔	$0.11$	$+1.27$	$0$	$0$	$0$	$0$
shinytest2-tm_t_shift_by_arm_by_worst	💔	$0.17$	$+1.88$	$0$	$0$	$0$	$0$
shinytest2-tm_t_shift_by_grade	💔	$0.13$	$+1.88$	$0$	$0$	$0$	$0$
shinytest2-tm_t_smq	💔	$0.11$	$+1.24$	$0$	$0$	$0$	$0$
shinytest2-tm_t_summary_by	💔	$0.15$	$+1.48$	$0$	$0$	$0$	$0$

Results for commit 74bf64e

♻️ This comment has been updated with latest results.

[osenan]

I have read the CLA Document and I hereby sign the CLA

[llrs-roche]

Sorry I mixed PR and that one was merged by accident. Use this selector instead: https://github.com/insightsengineering/teal.modules.clinical/pull/1441/files#diff-eea16ad04c22c49466b528d79edebfcb683d3f6f2a255581e007bcc8534c9e9cR65

[llrs-roche]

Update this and merge