test(web-components): add vitest local coverage reports

[matthewgallo]

Closes #6712

Adds local coverage reports that can be generated to inspect coverage for the web component package.

What did you change?

packages/ibm-products-web-components/package.json
packages/ibm-products-web-components/src/components/side-panel/side-panel.test.ts
packages/ibm-products-web-components/vite.config.ts
package.json
yarn.lock

How did you test and verify your work?

Ran yarn coverage from `packages/

[netlify]

✅ Deploy Preview for ibm-products-web-components ready!

Name	Link
🔨 Latest commit	82fe69a
🔍 Latest deploy log	https://app.netlify.com/sites/ibm-products-web-components/deploys/6792a17a1944a600089ff05e
😎 Deploy Preview	https://deploy-preview-6726--ibm-products-web-components.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[netlify]

✅ Deploy Preview for carbon-for-ibm-products ready!

Name	Link
🔨 Latest commit	82fe69a
🔍 Latest deploy log	https://app.netlify.com/sites/carbon-for-ibm-products/deploys/6792a17adb15b2000845493e
😎 Deploy Preview	https://deploy-preview-6726--carbon-for-ibm-products.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[amal-k-joy]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.19%. Comparing base (8b03122) to head (82fe69a).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6726      +/-   ##
==========================================
+ Coverage   81.17%   81.19%   +0.02%     
==========================================
  Files         398      398              
  Lines       12955    12955              
  Branches     4282     4282              
==========================================
+ Hits        10516    10519       +3     
+ Misses       2439     2436       -3     

Components	Coverage Δ
ibm-products	∅ <ø> (∅)
ibm-products-web-components	∅ <ø> (∅)

[davidmenendez]

woot