Feat(web): Deprecate Dropdown non flow and modifier placement DS-1132

[crishpeen]

Use data attribute to set the placement now.
Use flow placement values, e.g. top-left is now top-start.

Description

Additional context

Issue reference

---

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines.
• Follow the PR Title/Commit Message Convention.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.

[netlify]

✅ Deploy Preview for spirit-design-system-storybook canceled.

Name	Link
🔨 Latest commit	6b3a134
🔍 Latest deploy log	https://app.netlify.com/sites/spirit-design-system-storybook/deploys/65d47b87fc0a890008304e6f

[netlify]

✅ Deploy Preview for spirit-design-system-demo ready!

Name	Link
🔨 Latest commit	6b3a134
🔍 Latest deploy log	https://app.netlify.com/sites/spirit-design-system-demo/deploys/65d47b875189560008491d9b
😎 Deploy Preview	https://deploy-preview-1271--spirit-design-system-demo.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 spirit-design-system-validations canceled.

Name	Link
🔨 Latest commit	6b3a134
🔍 Latest deploy log	https://app.netlify.com/sites/spirit-design-system-validations/deploys/65d47b87ed3adb00083ddaad

[netlify]

✅ Deploy Preview for spirit-design-system-react canceled.

Name	Link
🔨 Latest commit	6b3a134
🔍 Latest deploy log	https://app.netlify.com/sites/spirit-design-system-react/deploys/65d47b87a886ab00082e4a14

[coveralls]

coverage: 71.217% (-25.2%) from 96.371%
when pulling 6b3a134 on feat/web-dropdown-deprecations
into e954642 on main.

[adamkudrna]

+1 for rewriting the IDs!