DI resolving for value converters works incorrecty within slotted content

[ekzobrain]

🐛 Bug Report

Cause might be this PR: #1735

Example:

class SomeCustomElementWithSlot {}

<template>
  <au-slot></au-slot>
</template>

class SomeCustomElement {
  static dependencies = [SomeCustomElementWithSlot, SomeValueConverter];
}

<some-custom-element-with-slot>
  <input value.bind="value | someValueConverter">
</some-custom-element-with-slot>

🤔 Expected Behavior

works

😯 Current Behavior

Throws exception:
Error: AUR0009: Attempted to jitRegister something that is not a constructor: 'au:resource:value-converter:someValueConverter'. Did you forget to register this resource?
Seems like the wrong container is invoked, but only for evaluated expressions (value converters, binding behaviors), because custom elements are resolved correctly.

💁 Possible Solution

Register value converter in the root container.

🔦 Context

💻 Code Sample

🌍 Your Environment

Software	Version(s)
Aurelia	2.0.0-beta.7
Language
Browser
Bundler
Operating System
NPM/Node/Yarn

[bigopon]

Resolved by #1802