DBC22-5878: added auto full line-height gap between content paragraphs

[bcgov-brwang]

📝 Submitter

🔗 JIRA Ticket

• Ticket Link: https://moti-imb.atlassian.net/browse/DBC22-5878

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✅ Quality Assurance & Requirements

• Requirements Met: I have confirmed that all acceptance criteria from the JIRA ticket are fulfilled.
• Tested desktop in local or dev envs
• Tested mobile in local or dev envs
• Ran unit tests locally
• SonarCloud: I have verified that the SonarCloud analysis is clean/passing for this branch.

⚙️ Configuration & Environment

• New Env Variables: Does this PR require new environment variables? (Yes/No)

  If yes, please list them here and ensure they are added to secret manager, the .env.example. and the Vault by an STA.

🧪 How to Test (if required)

1. Login to wagtail backend, create/edit advisories/bulletins with multiple paragraphs in the rich-text content without adding any carriage returns, and publish the advisory or bulletin.
2. Go to dbc frontend to verify if there are auto vertical spaces added between paragraphs.

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🔍 Reviewer Checklist

• Reviewed code for logic and cleanliness
• Re-tested desktop/mobile in local or dev envs
• Verified no new console warnings/errors
• Confirmed that any new env variables are understood/documented

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud