AA: relax the assertion about referenced ClassId and qualified access

If an import alias is involved, they could be not identical.
Since an import alias ends with a simple identifer, we can simply drop
the first segment of qualified access and try the assertion again.

analysis/analysis-api/testData/referenceResolve/importAlias.kt

@@ -0,0 +1,20 @@
+// FILE: R.kt
+package test.pkg
+
+class R {
+    class string {
+        companion object {
+            val hello : Int = 42
+        }
+    }
+}
+
+// FILE: main.kt
+
+package test.pkg
+
+import test.pkg.R as coreR
+
+fun box() {
+    val s = core<caret>R.string.hello
+}

analysis/analysis-api/testData/referenceResolve/importAlias.txt

@@ -0,0 +1,2 @@
+Resolved to:
+0: (in test.pkg) class R