Only control focus when toggling Popover

[connor-baer]

Purpose

Currently, the Popover immediately hijacks the focus when rendered. It should only control the focus when toggled.

Approach and changes

• Keep track of the previous open state and only move the focus when the open state changes.

Definition of done

• Development completed
• Reviewers assigned
• Unit and integration tests
• Meets minimum browser support
• Meets accessibility requirements

[changeset-bot]

🦋 Changeset detected

Latest commit: 61d11cf

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@sumup/circuit-ui	Patch

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[codecov]

Codecov Report

Merging #1046 (61d11cf) into next (9a35c9a) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             next    #1046   +/-   ##
=======================================
  Coverage   91.58%   91.58%           
=======================================
  Files         164      164           
  Lines        2780     2782    +2     
  Branches      813      814    +1     
=======================================
+ Hits         2546     2548    +2     
  Misses        211      211           
  Partials       23       23           

Impacted Files	Coverage Δ
packages/circuit-ui/util/test-utils.tsx	100.00% <ø> (ø)
packages/circuit-ui/components/Popover/Popover.tsx	96.00% <100.00%> (+0.10%)	⬆️

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