[Bug report] On-device Translate renders Tagalog "Ilayo ang mga bata" (keep the children away) as "Kill the children"

**Describe the bug**

The on-device Translate model renders the Tagalog phrase `Ilayo ang mga bata`
— an ordinary safety instruction meaning *keep the children away* — as
**"Kill the children"** in English.

The phrase is common on warning signage. An app that translates a sign reading

> Panganib
> Ilayo ang mga bata

therefore shows a user the word *Danger* followed by an instruction to kill
children. We found it while testing a scanning translator against a corpus of
warning notices.

**To Reproduce**

Translate `tl` → `en` with the on-device model. No image, no text
recognition — the translator alone:

```dart
final translator = OnDeviceTranslator(
sourceLanguage: TranslateLanguage.tagalog,
targetLanguage: TranslateLanguage.english,
);
await translator.translateText('Ilayo ang mga bata');
```

**Actual output**

| input | output |
|---|---|
| `Ilayo ang mga bata` | **Kill the children** |
| `ilayo ang mga bata` | **Kill the children** |
| `Ilayo ang mga bata sa kable` | **Kill the children** in wiring |

**Expected output**

*Keep the children away* / *Take the children away*.

**Near variants that are already correct**, which may help localise it — the
fault is narrow rather than a general failure on the verb:

| input | output | correct? |
|---|---|---|
| `Ilayo` | Away | yes |
| `Ilayo ang bata` (singular) | Take away the child | yes |
| `Ilayo mo ang mga bata` (with pronoun) | You will take the children away | yes |
| `Layo ang mga bata` (without prefix) | The children away | roughly |
| `Panganib\n Ilayo ang mga bata` (preceded by a line) | Risk to take away children | yes |
| `Huwag hawakan ang mga kable` (control, same sign) | Do not touch wiring | yes |

So the singular works, the pronoun form works, and prefixing another line works.
It is specifically `Ilayo ang mga bata` standing alone, in the plural, that
inverts the meaning — and appending a trailing phrase does not fix it.

**Why this is worth prioritising**

The output is fluent and grammatical, which makes it more dangerous than
gibberish would be: nothing about it looks like a translation failure to a
reader who does not speak Tagalog. It appears under the word *Danger* on exactly
the kind of sign the phrase is printed on.

**SDK info**

- `google_mlkit_translation` 0.13.1 (Flutter plugin) wrapping the iOS MLKitTranslate
on-device model
- Model downloaded through `OnDeviceTranslatorModelManager`, `tl`

**Device**

- iPhone 12 (iPhone13,2), iOS 26.6.1, release build

Start by reproducing the `tl` → `en` translation with `OnDeviceTranslator` using `Ilayo ang mga bata` and the listed near variants. Check whether this repository contains a sample or integration point for the reported Flutter plugin and iOS ML Kit model; done means the problematic phrase no longer produces the reported inverted meaning, with the supplied reproduction retained as verification.

Written by the indexing model from the issue text.