fix(i18n): translate the GLP-1 dashboard tile copy across FR/ES/IT/PL

`dashboard.glp1.lastInjection`, `nextInjection`, `weightDelta`, and
`inDays` were translated to DE only in the v1.4.27 dashboard rebuild
— the FR/ES/IT/PL bundles still held the EN strings verbatim and
rendered "Last injection" / "Next injection" / "since start" / "in
{count} days" on the live tile. Translate all four keys into native
phrasings:

- FR: `Dernière injection` / `Prochaine injection` / `depuis le début` /
  `dans {count} jours`
- ES: `Última inyección` / `Próxima inyección` / `desde el inicio` /
  `en {count} días`
- IT: `Ultima iniezione` / `Prossima iniezione` / `dall'inizio` /
  `tra {count} giorni`
- PL: `Ostatnia iniekcja` / `Następna iniekcja` / `od początku` /
  `za {count} dni`

The other seven keys in the `dashboard.glp1.*` namespace already ship
correctly across every locale, so this closes a copy-paste residue
rather than a missing namespace.

messages/es.json

@@ -261,10 +261,10 @@
     "emptyAddMeasurement": "Add your first measurement",
     "glp1": {
       "title": "Terapia GLP-1",
-      "lastInjection": "Last injection",
-      "nextInjection": "Next injection",
-      "weightDelta": "since start",
-      "inDays": "in {count} days",
+      "lastInjection": "Última inyección",
+      "nextInjection": "Próxima inyección",
+      "weightDelta": "desde el inicio",
+      "inDays": "en {count} días",
       "tabLevel": "Nivel",
       "tabWeight": "Peso",
       "tabsAria": "Cambiar entre vista de nivel y vista de peso",

messages/fr.json

@@ -261,10 +261,10 @@
     "emptyAddMeasurement": "Add your first measurement",
     "glp1": {
       "title": "Traitement GLP-1",
-      "lastInjection": "Last injection",
-      "nextInjection": "Next injection",
-      "weightDelta": "since start",
-      "inDays": "in {count} days",
+      "lastInjection": "Dernière injection",
+      "nextInjection": "Prochaine injection",
+      "weightDelta": "depuis le début",
+      "inDays": "dans {count} jours",
       "tabLevel": "Taux",
       "tabWeight": "Poids",
       "tabsAria": "Basculer entre la vue taux et la vue poids",

messages/it.json

@@ -261,10 +261,10 @@
     "emptyAddMeasurement": "Add your first measurement",
     "glp1": {
       "title": "Terapia GLP-1",
-      "lastInjection": "Last injection",
-      "nextInjection": "Next injection",
-      "weightDelta": "since start",
-      "inDays": "in {count} days",
+      "lastInjection": "Ultima iniezione",
+      "nextInjection": "Prossima iniezione",
+      "weightDelta": "dall'inizio",
+      "inDays": "tra {count} giorni",
       "tabLevel": "Livello",
       "tabWeight": "Peso",
       "tabsAria": "Passa tra vista del livello e vista del peso",

messages/pl.json

@@ -261,10 +261,10 @@
     "emptyAddMeasurement": "Add your first measurement",
     "glp1": {
       "title": "Terapia GLP-1",
-      "lastInjection": "Last injection",
-      "nextInjection": "Next injection",
-      "weightDelta": "since start",
-      "inDays": "in {count} days",
+      "lastInjection": "Ostatnia iniekcja",
+      "nextInjection": "Następna iniekcja",
+      "weightDelta": "od początku",
+      "inDays": "za {count} dni",
       "tabLevel": "Poziom",
       "tabWeight": "Waga",
       "tabsAria": "Przełącz między widokiem poziomu i widokiem wagi",