fix(core): initialize slotcontroller map after update

[bennypowers]

What I did

1. Wait until first update to initialize slot map

[changeset-bot]

🦋 Changeset detected

Latest commit: b260ced

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

This PR includes changesets to release 1 package

Name	Type
@patternfly/pfe-core	Patch

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[github-actions]

✅ Commitlint tests passed!

More Info

{
  "valid": true,
  "errors": [],
  "warnings": [],
  "input": "fix(core): initialize slotcontroller map after update"
}

[github-actions]

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[github-actions]

SSR Test Run for 0c67bc7: Report

[bennypowers]

Add Regression test

[github-actions]

SSR Test Run for 0130d3f: Report

[github-actions]

SSR Test Run for c3dc861: Report