bugfix: Named args completions with default values #11464

Job	Run time
Gradle MacOS integration	13m 3s
windows-latest jdk-17 unit tests 1 / 2	24m 20s
Sbt integration	48m 6s
windows-latest jdk-17 unit tests 2 / 2	20m 14s
Maven integration	13m 48s
macOS-latest jdk-17 unit tests 1 / 2	25m 7s
Gradle integration	10m 15s
macOS-latest jdk-17 unit tests 2 / 2	17m 44s
Scala CLI integration	24m 8s
ubuntu-latest jdk-17 unit tests 1 / 2	19m 49s
Mill integration	13m 38s
ubuntu-latest jdk-17 unit tests 2 / 2	14m 49s
LSP integration tests	33m 8s
ubuntu-latest jdk-8 unit tests 1 / 2	21m 31s
Scala cross tests	56m 23s
ubuntu-latest jdk-8 unit tests 2 / 2	17m 40s
Formatting	1m 1s
Scalafix and docs	9m 42s
Sbt-metals/scripted jdk8	2m 19s
Scala javapc tests	2m 4s
Scala3 latest NIGHTLY cross test	4m 57s
MiMa	1m 17s
	6h 35m 3s

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