fix(mobile): say the passwords do not match when saving a new password

Save stayed disabled while the confirmation differed, so tapping it did
nothing and the mismatch message was only reachable from the keyboard.
Save is now enabled once every field is filled and reports the mismatch.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/mobile/src/modules/settings/routes/ResetPassword.tsx

@@ -29,8 +29,8 @@ export const ResetPassword = () => {
   const [newPassword, setNewPassword] = useState("")
   const [confirmNewPassword, setConfirmNewPassword] = useState("")
 
-  const isFormValid =
-    !!currentPassword && !!newPassword && !!confirmNewPassword && newPassword === confirmNewPassword
+  const isFormFilled = !!currentPassword && !!newPassword && !!confirmNewPassword
+  const isFormValid = isFormFilled && newPassword === confirmNewPassword
 
   const { mutate: submitChangePassword, isPending } = useMutation({
     mutationFn: async () => {
@@ -80,11 +80,13 @@ export const ResetPassword = () => {
                     <CheckLineIcon height={18} width={18} color={labelColor} />
                   )
                 }
-                disabled={!isFormValid || isPending}
+                // Enabled once every field is filled, so saving a confirmation that does not
+                // match says so instead of doing nothing
+                disabled={!isFormFilled || isPending}
                 onPress={handleSave}
               />
             ),
-            [handleSave, isFormValid, isPending, labelColor, t],
+            [handleSave, isFormFilled, isPending, labelColor, t],
           )}
         />
       }