Fixed containingDeclaration for descriptors inside init-blocks for the case of no primary constructor

KT-10226 Wrong Imports optimization ("Unresolved reference" is being added)

 #KT-10226 Fixed

idea/testData/editor/optimizeImports/KT10226.kt

@@ -0,0 +1,10 @@
+import java.io.File
+
+class C {
+    constructor(file: File)
+
+    init {
+        val xxx = 1
+        xxx.inc()
+    }
+}

idea/testData/editor/optimizeImports/KT10226.kt.after

@@ -0,0 +1,10 @@
+import java.io.File
+
+class C {
+    constructor(file: File)
+
+    init {
+        val xxx = 1
+        xxx.inc()
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/imports/OptimizeImportsTestGenerated.java

@@ -137,6 +137,12 @@ public class OptimizeImportsTestGenerated extends AbstractOptimizeImportsTest {
         doTest(fileName);
     }
 
+    @TestMetadata("KT10226.kt")
+    public void testKT10226() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/editor/optimizeImports/KT10226.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("KT9875.kt")
     public void testKT9875() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("idea/testData/editor/optimizeImports/KT9875.kt");