[NI] Fix exception on incomplete try/catch block

There was an inconsistency on creating PSI call and corresponding
 descriptor. See variable `catchBlocks` from visitor, it's created
 only if PSI elements are not null, but for descriptor parameters
 there wasn't such check

 #KT-32134 Fixed
 #EA-139748 Fixed

compiler/testData/diagnostics/tests/incompleteCode/incompleteTryCatchBlock.txt

@@ -0,0 +1,5 @@
+package
+
+public fun test1(): kotlin.Unit
+public fun test2(): kotlin.Unit
+public fun test3(): kotlin.Unit