fix(autocomplete): don't resize the container in updateSize()

[Splaktar]

PR Checklist

Please check that your PR fulfills the following requirements:

• The commit message follows our guidelines
• Tests for the changes have been added or this is not a bug fix / enhancement
• Docs have been added, updated, or were not required

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Enhancement
[ ] Documentation content changes
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

Calling this.setSize_(size) results in the containers width/height being changed which is undesirable and causes tests to fail inside of g3.

Issue Number:
Relates to #11500

What is the new behavior?

Just set this.size and avoid resizing the container in updateSize().

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information