[Developer Tools] Aggregation auto-complete is broken in 7.2.0

[Jamalarm]

Kibana version:
7.2.0

Elasticsearch version:
7.2.0

Server OS version:
Unknown: Hosted Elastic Cloud

Browser version:
Google Chrome Version 75.0.3770.100 (Official Build) (64-bit)

Browser OS version:
MacOS Mojave 10.14.5 (18F132)

Original install method (e.g. download page, yum, from source, etc.):
Unknown: Hosted Elastic Cloud

Describe the bug:
In the developer tools console, the auto-complete for the "aggs" object is broken as of 7.2.0. The auto-complete is focused on the wrong tag (it picks the NAME tag rather than the AGG_TYPE tag).

Steps to reproduce:
Given a dummy search like this:

POST _search
{
  "aggs": {
    "NAME": {
      "AGG_TYPE": {}
    }
  }
}

Position the cursor to the left of the N in "NAME" and press ctrl+space or start typing "terms" and you'll see the UI suggest an aggregation type. This is obviously the wrong place for the aggregation type. If you try and do auto complete in the "AGG_TYPE" tag it won't suggest anything or auto-complete the syntax.

This has effectively broken the auto-complete aspect of aggregations in the console.

Expected behavior:
Aggregation syntax should be auto-completed correctly (as in 7.1.0 and previous)

Screenshots (if relevant):

[elasticmachine]

Pinging @elastic/es-ui

[cjcenizal]

Possibly related to #40254.

[cjcenizal]

Closing this as a dupe of the above issue.