feat(orama): add defaults

[avivkeller]

Ref: https://openjs-foundation.slack.com/archives/CVAMEJ4UV/p1756145667553889?thread_ts=1755714272.918999&cid=CVAMEJ4UV

All of these variables are public.

[vercel]

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Project	Deployment	Preview	Updated (UTC)
nodejs-org	Ready	Preview	Nov 12, 2025 1:28am

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.77%. Comparing base (c49bc15) to head (659624e).
⚠️ Report is 2 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8351      +/-   ##
==========================================
- Coverage   76.77%   76.77%   -0.01%     
==========================================
  Files         118      118              
  Lines        9825     9828       +3     
  Branches      336      336              
==========================================
+ Hits         7543     7545       +2     
- Misses       2280     2281       +1     
  Partials        2        2              

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[Copilot]

Pull Request Overview

This PR adds default values for three Orama Cloud configuration constants to enable the search functionality to work out-of-the-box without requiring environment variables to be set. Previously, these constants would default to empty strings, preventing the Orama Cloud client from being initialized.

• Added default value for ORAMA_CLOUD_READ_API_KEY
• Added default value for ORAMA_CLOUD_DATASOURCE_ID
• Added default value for ORAMA_CLOUD_PROJECT_ID

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[avivkeller]

@nodejs/nodejs-website can we fast track this, it makes local development easier