Fix handling of font-* css that aren't being specially handled, like font-size-adjust

[dpvc]

This PR fixes a problem with the ts/util/Styles.ts handling of some CSS where the root property is defined by the sub-process isn't, such as font-size-adjust. Without this PR, processing that style (say in the LiteDOM) would cause an error. A new test is added to check or this.

I found this by running all the examples from the documentation on the 4.1.1 candidate.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.51%. Comparing base (40226d1) to head (b182f06).

Additional details and impacted files

@@            Coverage Diff             @@
##           develop    #1431     +/-   ##
==========================================
  Coverage    86.51%   86.51%             
==========================================
  Files          340      340             
  Lines        86030    86031      +1     
  Branches      4832     3191   -1641     
==========================================
+ Hits         74429    74430      +1     
- Misses       11577    11601     +24     
+ Partials        24        0     -24     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.