Be a bit more flexible and accept when a type parameter is not provided.

This is obviously not a good sign, but it does come up with mismatched versions. It's also hard to debug, and the value of breaking the conversion is at least very low

Fixes issue raised in ScalablyTyped/ScalaJsReactDemos#8

ts/src/main/scala/org/scalablytyped/converter/internal/ts/FillInTParams.scala

@@ -60,7 +60,10 @@ object FillInTParams {
           case (TsTypeParam(_, expected, _, default), idx) =>
             val provided =
               if (providedTParams.lengthCompare(idx) > 0) providedTParams(idx)
-              else default.getOrElse(sys.error("Type parameter not provided"))
+              else
+                default.getOrElse(
+                  TsTypeRef.any.copy(comments = Comments(Comment.warning(s"${expected.value} not provided"))),
+                )
 
             TsTypeRef(expected) -> provided
         }.toMap