Bug - Correct Syntax Throwing Error for non empty value in context

**Syntax**
```hbs
{{#if (name)}}{{/if}}
```

**Throw Error When pass non empty string for name in context**

| Empty value for name in context | Non Empty value for name in context |
|----| --- |
| | |

**Error String**

```cmd
(lookupProperty(...) || (depth0 && lookupProperty(...)) || container.hooks.helperMissing).call is not a function

Error: (lookupProperty(...) || (depth0 && lookupProperty(...)) || container.hooks.helperMissing).call is not a function
at t._callbacks. (https://handlebarsjs.com/assets/js/8.214167ea.js:1:61688)
at n (https://handlebarsjs.com/assets/js/8.214167ea.js:1:61432)
at Worker. (https://handlebarsjs.com/assets/js/8.214167ea.js:1:61536)
```

> _Same Happening for unless helper too_

Reproduce the reported Handlebars syntax with both empty and non-empty name values, then compare the generated behavior for the if and unless helpers. No repository file or test is named in the issue, so first locate the helper invocation and its existing regression tests. Done means non-empty values no longer throw and both helpers behave consistently.

Written by the indexing model from the issue text.