FIR CFG: ignore exception edges when looking for return values

^KT-54668 Fixed

compiler/fir/analysis-tests/testData/resolve/properties/lazyValWithElvisToNothingInside.fir.txt

@@ -15,5 +15,5 @@ FILE: lazyValWithElvisToNothingInside.kt
     }
     )
         public get(): R|kotlin/collections/Map<kotlin/String, kotlin/String>| {
-            ^ D|/x|.<CS errors: kotlin/getValue>#<R|kotlin/collections/Map<kotlin/String, kotlin/String>|>(Null(null), ::R|/x|)
+            ^ D|/x|.R|kotlin/getValue|<R|kotlin/collections/Map<kotlin/String, kotlin/String>|>(Null(null), ::R|/x|)
         }

compiler/fir/analysis-tests/testData/resolve/properties/lazyValWithElvisToNothingInside.kt

@@ -7,8 +7,8 @@ interface A {
 
 fun getA(): A? = null
 
-val x by <!DELEGATE_SPECIAL_FUNCTION_NONE_APPLICABLE, NEW_INFERENCE_ERROR!>lazy {
+val x by lazy {
     (getA() ?: error("error")).list.associateBy {
         it
     }
-}<!>
+}