Workaround scala#3898 and use a Seq[Expr[Any]] instead of Expr[Seq[Any]]

Author: nicolasstucki

tests/run/f-interpolator.check

@@ -1 +1,3 @@
 StringContext(List(List(abc, )))
+StringContext(List(List(abc, asf, )))
+StringContext(List(List(abc, , asf, )))

tests/run/f-interpolator/Interpolator_1.scala

@@ -3,10 +3,13 @@ import scala.quoted._
 object FInterpolation {
 
   implicit class FInterpolatorHelper(val sc: StringContext) extends AnyVal {
-    inline def ff(args: Any*): String = ~fInterpolation(sc, '(args))
+    inline def ff(arg1: Any): String = ~fInterpolation(sc, '(arg1))
+    inline def ff(arg1: Any, arg2: Any): String = ~fInterpolation(sc, '(arg1), '(arg2))
+    inline def ff(arg1: Any, arg2: Any, arg3: Any): String = ~fInterpolation(sc, '(arg1), '(arg2), '(arg3))
+    // ...
   }
 
-  def fInterpolation(sc: StringContext, args: Expr[Seq[Any]]): Expr[String] = {
+  def fInterpolation(sc: StringContext, args: Expr[Any]*): Expr[String] = {
     sc.toString
   }
 }

tests/run/f-interpolator/Test_2.scala

@@ -4,5 +4,7 @@ import FInterpolation._
 object Test {
   def main(args: Array[String]): Unit = {
     println(ff"abc${5}")
+    println(ff"abc${5}asf${"l"}")
+    println(ff"abc${5}${6}asf${8}")
   }
 }