KT-7443 Inspection + intention to replace assert (x != null) with "!!" or elvis

#KT-7443 Fixed

idea/testData/intentions/simplifyAssertNotNull/otherVariable.kt

@@ -0,0 +1,8 @@
+// IS_APPLICABLE: false
+// WITH_RUNTIME
+
+fun foo(p: Array<String?>) {
+    val v1 = p[0]
+    val v2 = p[1]
+    <caret>assert(v1 != null)
+}