FIR CFG: add more uncaught exception paths

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

@@ -62,7 +62,7 @@ fun innerFinallyInitializes() {
         }
 
         // Properly initialized
-        <!UNINITIALIZED_VARIABLE!>x<!>.inc()
+        x.inc()
     } catch (e: java.lang.Exception) {
         log()
     }
@@ -87,12 +87,12 @@ fun innerFinallyInitializesOuterRethrows() {
         }
 
         // Properly initialized
-        <!UNINITIALIZED_VARIABLE!>x<!>.inc()
+        x.inc()
     } catch (e: java.lang.Exception) {
         log()
         throw e
     }
 
     // Guaranteed to be initialized because all catch-clauses are rethrowing
-    <!UNINITIALIZED_VARIABLE!>x<!>.inc()
+    x.inc()
 }

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

@@ -43,5 +43,5 @@ fun innerTryCatchInitializes() {
         x = 42
     }
     // Here x=I because outer try-catch either exited normally (x=I) or catched exception (x=I, with reassingment, though)
-    <!UNINITIALIZED_VARIABLE!>x<!>.inc()
+    x.inc()
 }

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

@@ -30,5 +30,5 @@ fun innerTryCatchFinally() {
         }
     }
 
-    <!UNINITIALIZED_VARIABLE!>x<!>.inc()
+    x.inc()
 }