feat(app): improve disclaimer wording

app/lib/l10n/app_en.arb

@@ -53,7 +53,7 @@
   "@drug_selection_header": {},
   "drug_selection_continue_warning_title": "Confirm proceeding",
   "@drug_selection_continue_warning_title": {},
-  "drug_selection_continue_warning": "Proceeding will close the initial medication selection. You can always change the status for a medication later in the app.",
+  "drug_selection_continue_warning": "When you proceed to the next step of the app setup, you will not be able to come back to this page. You can always change your current medications later in the app.",
   "@drug_selection_continue_warning": {},
   "drug_selection_settings_description": "Review the medications you are currently taking below.",
   "@drug_selection_settings_description": {},