Inline partial isolation issue

[YannikSc]

Hey, I just noticed an issue with using partials and inline. The issue is, that as soon as an inner partial is overridden using inline, every call after the inline will use the overridden partial no matter which level it is on.

I boiled it down to a minimal example with this code in handlebars-rust

{{#*inline "test_partial"}}
    {{#>test_inner}}
        Inner Default
    {{/test_inner}}
{{/inline}}

{{>test_partial}}

{{#>test_partial}}
    {{#*inline "test_inner"}}
        Overridden
    {{/inline}}
{{/test_partial}}

{{>test_partial}}

I would expect the output to show

Inner Default

Overridden

Inner Default

But when rendered it outputs

Inner Default

Overridden

Overridden

I'm not sure how the intended behavior in handlebars-rust is, but I assume it should be fairly similar, I created a minimal example here to show the expected and present behavior of handlebars.js.

[YannikSc]

I created a fix for this in my personal fork (YannikSc@351433b). I'm not sure if this suits the project so I will at least sleep a night about it before submitting a PR.

I'm also not sure if I broke something while stumbling through the code, but at least the tests still run successfully.