Create at most one wrapper sequence for adjacent drop/take operations on sequences.

Based on PR #814 by Sargun Vohra
#KT-10821 Fixed

libraries/stdlib/src/generated/_Sequences.kt

@@ -289,7 +289,11 @@ public inline fun <T> Sequence<T>.singleOrNull(predicate: (T) -> Boolean): T? {
  */
 public fun <T> Sequence<T>.drop(n: Int): Sequence<T> {
     require(n >= 0, { "Requested element count $n is less than zero." })
-    return if (n == 0) this else DropSequence(this, n)
+    return when {
+        n == 0 -> this
+        this is DropTakeSequence -> this.drop(n)
+        else -> DropSequence(this, n)
+    }
 }
 
 /**
@@ -367,7 +371,11 @@ public inline fun <T, C : MutableCollection<in T>> Sequence<T>.filterTo(destinat
  */
 public fun <T> Sequence<T>.take(n: Int): Sequence<T> {
     require(n >= 0, { "Requested element count $n is less than zero." })
-    return if (n == 0) emptySequence() else TakeSequence(this, n)
+    return when {
+        n == 0 -> emptySequence()
+        this is DropTakeSequence -> this.take(n)
+        else -> TakeSequence(this, n)
+    }
 }
 
 /**