[FIR] Handle fully qualified expressions separately in tower resolver

compiler/testData/diagnostics/testsWithStdLib/contracts/controlflow/flowInlining/inlinedLambdaAlwaysThrows.fir.kt

@@ -12,6 +12,6 @@ inline fun myRun(block: () -> Unit): Unit {
 }
 
 fun test() {
-    myRun { throw java.lang.<!UNRESOLVED_REFERENCE!>IllegalArgumentException<!>() }
+    myRun { throw java.lang.IllegalArgumentException() }
     val x: Int = 42
 }

compiler/testData/diagnostics/testsWithStdLib/contracts/controlflow/flowInlining/throwIfNotCalled.fir.kt

@@ -22,7 +22,7 @@ fun throwIfNotCalled() {
                 return@outer
             }
         }
-        throw java.lang.<!UNRESOLVED_REFERENCE!>IllegalArgumentException<!>()
+        throw java.lang.IllegalArgumentException()
     }
     // x *is* initialized here, because if myRun was never called -> exception
     // were thrown and control flow wouldn't be here
@@ -39,7 +39,7 @@ fun catchThrowIfNotCalled() {
                     return@outer
                 }
             }
-            throw java.lang.<!UNRESOLVED_REFERENCE!>IllegalArgumentException<!>()
+            throw java.lang.IllegalArgumentException()
         }
     } catch (ignored: java.lang.IllegalArgumentException) { }
 

compiler/testData/diagnostics/testsWithStdLib/contracts/controlflow/flowInlining/unreachableCode.fir.kt

@@ -12,6 +12,6 @@ inline fun <T> myRun(block: () -> T): T {
 }
 
 fun throwInLambda(): Int {
-    val x = myRun { throw java.lang.<!UNRESOLVED_REFERENCE!>IllegalArgumentException<!>(); 42 }
+    val x = myRun { throw java.lang.IllegalArgumentException(); 42 }
     return x
 }