Partial parameters should have precedence over parent context

[njust]

With a template like this

{{~#*inline "displayName"~}}
    Template:{{name}}
{{/inline}}

{{#each data as |name|}}
    Name:{{name}}
    {{>displayName name="aaaa"}}
{{/each}}

And the data

{
    "data": ["hudel", "test"]
}

The expected output is:

Name:hudel
Template:aaaa

Name:test
Template:aaaa

But with version 4.2.1 the output is:

Name:hudel
Template:hudel
Name:test
Template:test

[sunng87]

@njust could you test if the fix in #496 works for your full scenario?

[njust]

Unit test works and the full scenario as well. Thanks for the fix!