Unused symbol: handle functions with inline class parameters correctly

#KT-27357 Fixed

idea/testData/inspections/unusedSymbol/function/functionWithInlineClassParam.kt

@@ -0,0 +1,6 @@
+inline class InlineClass(val x: Int)
+
+// Unused
+fun foo(arg: InlineClass) {
+    arg.x.hashCode()
+}

idea/testData/inspections/unusedSymbol/function/inspectionData/expected.xml

@@ -78,4 +78,13 @@
     <problem_class severity="WARNING" attribute_key="NOT_USED_ELEMENT_ATTRIBUTES">Unused symbol</problem_class>
     <description>Constructor is never used</description>
   </problem>
+
+  <problem>
+    <file>functionWithInlineClassParam.kt</file>
+    <line>4</line>
+    <module>light_idea_test_case</module>
+    <entry_point TYPE="file" FQNAME="temp:///src/functionWithInlineClassParam.kt" />
+    <problem_class severity="WARNING" attribute_key="NOT_USED_ELEMENT_ATTRIBUTES">Unused symbol</problem_class>
+    <description>Function &quot;foo&quot; is never used</description>
+  </problem>
 </problems>

idea/testData/inspectionsLocal/unusedSymbol/functionWithInlineClass.kt

@@ -0,0 +1,7 @@
+// PROBLEM: none
+
+inline class InlineClass(val x: Int)
+
+fun <caret>takeInline(inlineClass: InlineClass) = 1
+
+val call = takeInline(InlineClass(1))

idea/testData/inspectionsLocal/unusedSymbol/functionWithInlineClassReceiver.kt

@@ -0,0 +1,7 @@
+// PROBLEM: none
+
+inline class InlineClass(val x: Int)
+
+fun InlineClass.<caret>takeInline() = 1
+
+val call = InlineClass(1).takeInline()

idea/testData/inspectionsLocal/unusedSymbol/inlineClassMemberFunction.kt

@@ -0,0 +1,7 @@
+// PROBLEM: none
+
+inline class InlineClass(val x: Int) {
+    fun <caret>takeInline() = 1
+}
+
+val call = InlineClass(1).takeInline()