3.8.0 fails to parse numeric literal separators

[Mareks Rampāns]

Following code fails when using version 3.8.0:

    def f = 1_000_000_000.0 // fails to parse
    def d = 1_000_000_000d // fails to parse
    def D = 1_000_000_000D // fails to parse
    def l = 1_000_000_000L // ok
    def tD = 1_000_000_000.toDouble // ok
    def compact = 1000000000d // ok

Error (input string depends on code):

org.scalafmt.sbt.ScalafmtSbtReporter$ScalafmtSbtError: scalafmt: For input string: "1_000_000_000d" 

https://www.baeldung.com/scala/underscore#2-numeric-literal-separator-scala-213