Restore Code coverage - including webSocket and StaandardIO tests

[apupier]

due to an upgrade in SonarCloud, we lost the code coverage. We need to find how to reenable it.

[apupier]

seems not due to Sonar upgrade but to the added tests on the Runner main class for WebSocket and StandardIo.

If i disable them I have coverage reported locally.

[apupier]

coverage is currently reported without tests on the Runner main class for WebSocket and StandardIo

[apupier]

wondering if it wasn't caused by some Thread that were leftover:
#605

camel-language-server/src/test/java/com/github/cameltooling/lsp/internal/RunnerStandardIOTest.java

Line 56 in 8c8333e

new Thread(new Runnable() {