Support stories with meta id for permalinking

[yannbf]

This PR adds support for the use of ID in stories which we are used for permalinking, e.g.

export default {
    title: 'Components/Notifications/In-page Alerts',
    component: InPageAlert,
    id: 'in-page-alerts',
}

📦 Published PR as canary version: 0.16.1--canary.419.49762ec.0

✨ Test out this PR locally via:

npm install @storybook/test-runner@0.16.1--canary.419.49762ec.0
# or 
yarn add @storybook/test-runner@0.16.1--canary.419.49762ec.0

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (dd7eb64) 93.72% compared to head (49762ec) 93.77%.
Report is 2 commits behind head on next.

Additional details and impacted files

@@            Coverage Diff             @@
##             next     #419      +/-   ##
==========================================
+ Coverage   93.72%   93.77%   +0.04%     
==========================================
  Files          15       15              
  Lines         271      273       +2     
  Branches       70       71       +1     
==========================================
+ Hits          254      256       +2     
  Misses         17       17              

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