A4-Tacks 847317ccba
Add default varname for TryEnum postfix completion
Example
---
```rust
fn main() {
    let bar = Some(true);
    bar.i$0
}
```

**Before this PR**

```rust
fn main() {
    let bar = Some(true);
    if let Some($1) = bar {
        $0
    }
}
```

**After this PR**

```rust
fn main() {
    let bar = Some(true);
    if let Some(${1:bar}) = bar {
        $0
    }
}
```
2025-12-21 13:55:21 +08:00
..