Fixing tagcloud issues due d3 v6 incompatabilities.

[YOUR1]

Makes the tag cloud work again.

TypeError: Cannot read properties of undefined (reading 'category20b') at jQuery.fn.init.wordcloud (ext.srf.formats.tagcloud.js:149:24) at jQuery.fn.init.<anonymous> (ext.srf.formats.tagcloud.js:236:23) at HTMLDivElement.loop (ext.smw.js:292:15) at loop (jquery.async.js:58:17) at jquery.async.js:29:4 at $.whileAsync (jquery.async.js:41:4) at $.eachAsync (jquery.async.js:53:4) at $.fn.eachAsync (jquery.async.js:65:4) at Object.load (ext.smw.js:288:14) at ext.srf.formats.tagcloud.js:234:17

There was also an open PR on #978 but that had ALOT of changes which aren't necessary. This is minor.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 45.09%. Comparing base (63b4313) to head (15d4f07).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@ Coverage Diff @@ ## master #981 +/- ## ========================================= Coverage 45.09% 45.09% Complexity 2422 2422 ========================================= Files 81 81 Lines 9196 9196 ========================================= Hits 4147 4147 Misses 5049 5049 

☔ 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.

[YOUR1]

Pinging @gesinn-it-ilm, since he was the original author of the D3 V6 update.