fix(sheets): stop two capture forms asking before anything was entered

The symptom form and the dashboard's medication intake asked "Discard?"
on every close, untouched. The sheet's fallback check read the input
Radix keeps for the intensity slider (value "0" before anyone moves
it) and the dose the form fills in from the preselected medication as
typed input.

The check now skips a slider's own input and counts a slider moved off
unanswered instead, and compares a field against the value its form
says it filled in (`data-seed`). A controlled input's defaultValue
follows its value, so it cannot tell the two apart. The dose field
names the medication's dose, one line more for the form's baseline.

src/__tests__/baselines/source-function-lines.json

@@ -84,7 +84,7 @@
     "components/cycle/log-day-sheet.tsx :: LogDaySheet": 760,
     "components/daily/today-hero.tsx :: TodayHero": 488,
     "components/dashboard/dashboard-header.tsx :: DashboardHeader": 215,
-    "components/dashboard/medication-intake-quick-add.tsx :: MedicationIntakeQuickAdd": 383,
+    "components/dashboard/medication-intake-quick-add.tsx :: MedicationIntakeQuickAdd": 384,
     "components/day/day-layer.tsx :: DayLayer": 358,
     "components/day/day-view.tsx :: DayView": 309,
     "components/documents/document-ai-section.tsx :: DocumentAiSection": 262,