Hotfix: suggestion selection crash

[mallexxx]

Task/Issue URL: https://app.asana.com/0/inbox/1199237043628108/1201958708460468/1201958708499920
Tech Design URL:
CC:

Description:
Fixes crash when selecting shorter suggestion:

Seems that touchbar doesn't get the updated string value before "willChangeSelection" is called and using an old string range value

in the reproduction steps below it got {0, 27} range whereas the real range is {0, 23}

So the async call is not for the threads issue but to get the touchbar updated before we call redraw

Steps to test this PR:
0. Activate Xcode->Window->Touch Bar->Show Touch Bar

1. Enter "a" text into search field
2. Select down till a long item switching to a short one (aerlingus.com/... -> aib, see screenshot; Erase and re-enter "a" until the needed result appears)
3. Validate there's no crash

Testing checklist:

• Test with Release configuration

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Internal references:

Software Engineering Expectations
Technical Design Template
When ready for review, remember to post the PR in MM

[mallexxx]

[brindy]

LGTM! 🥇