KT-9875 False unused import in kotlinSpacingRules.kt

#KT-9875 Fixed

idea/testData/editor/optimizeImports/KT9875.kt

@@ -0,0 +1,18 @@
+package p
+
+import p.Outer.Inner1
+import p.Outer.Inner2
+
+class Outer {
+    inner class Inner1
+    inner class Inner2
+}
+
+fun foo(p: Outer.() -> Unit){}
+
+fun bar() {
+    foo {
+        fun Inner1.f() {}
+        Inner2()
+    }
+}

idea/testData/editor/optimizeImports/KT9875.kt.after

@@ -0,0 +1,17 @@
+package p
+
+import p.Outer.Inner1
+
+class Outer {
+    inner class Inner1
+    inner class Inner2
+}
+
+fun foo(p: Outer.() -> Unit){}
+
+fun bar() {
+    foo {
+        fun Inner1.f() {}
+        Inner2()
+    }
+}