fix: Correctly Set eVar30

[andreituicu]

Test URLs: With Launch enabled

• Before: https://main--servicenow--hlxsites.hlx.live/blogs
• After: https://evar30--servicenow--hlxsites.hlx.live/blogs

With Launch Disabled

• Before: https://main--servicenow--hlxsites.hlx.live/blogs?disableLaunch=true
• After: https://evar30--servicenow--hlxsites.hlx.live/blogs?disableLaunch=true

[aem-code-sync[bot]]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed. In case there are problems, just click a checkbox below to rerun the respective action.

• [ ] Re-run PSI checks
• [ ] Re-sync branch

Commits

* [fff1173](https://github.com/hlxsites/servicenow/commit/fff1173a64e833b2a479643a41416992758076b5) :white_check_mark: (latest) * [4f0b58f](https://github.com/hlxsites/servicenow/commit/4f0b58f732cce41028accab254a611687c9b2c36) :white_check_mark: * [aa1db55](https://github.com/hlxsites/servicenow/commit/aa1db55d538c745c89fa793b4e1f47966a672ac1) :white_check_mark:

[aem-code-sync[bot]]

Page	Scores	Audits	Google
/blogs
/blogs?disableLaunch=true