Add fallback type for Storybook 6 builder syntax

[ethriel3695]

There is a builder check in the storybook metadata, and SB 6 uses an object for the builder rather than the new format of a string value.

We added logic to handle both.

📦 Published PR as canary version: 11.5.1--canary.1001.9355178223.0

✨ Test out this PR locally via:

npm install [email protected]
# or 
yarn add [email protected]

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.02% (target: -1.00%)	✅ 80.00% (target: 80.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (9ca67a5)	8450	6667	78.90%
Head commit (9483a03)	8449 (-1)	6668 (+1)	78.92% (+0.02%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#1001)	10	8	80.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[ghengeveld]

🚀 PR was released in v11.5.1 🚀