assorted Find Usages fixes: add missing read actions, better cancellation, fix search of componentN() usages for data class primary constructor parameter, remove workaround for usage of IDEA API which is now public

idea/testData/findUsages/kotlin/findParameterUsages/kotlinComponentFunctionParameterUsages.0.kt

@@ -0,0 +1,6 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.JetParameter
+// OPTIONS: usages
+package test
+
+public data class KotlinDataClass(val <caret>foo: Int, val bar: String) {
+}

idea/testData/findUsages/kotlin/findParameterUsages/kotlinComponentFunctionParameterUsages.1.java

@@ -0,0 +1,7 @@
+package test;
+
+public class JavaUser {
+    int use(KotlinDataClass dataClass) {
+        return dataClass.component1();
+    }
+}

idea/testData/findUsages/kotlin/findParameterUsages/kotlinComponentFunctionParameterUsages.results.txt

@@ -0,0 +1 @@
+Unclassified usage (5: 26) return dataClass.component1();