chore(rum): display fix for favicon for aggregates with `:`

[davidnuescheler]

https://www.aem.live/tools/rum/explorer.html?domain=test.com%3Aall

vs.

https://rum-icon-fix--helix-website--adobe.aem.live/tools/rum/explorer.html?domain=test.com%3Aall

[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

* [311c565](https://github.com/adobe/helix-website/commit/311c5659e57cb1b326d59e0518a9e40c6f61e30c) :white_check_mark: (latest)

[aem-code-sync[bot]]

	Page	Scores	Audits	Google
M	/tools/rum/explorer.html?domain=test.com%3Aall
D	/tools/rum/explorer.html?domain=test.com%3Aall