[FE 1.0] Report NON_EXHAUSTIVE_WHEN_STATEMENT/NO_ELSE_IN_WHEN for when's on logical types

^KT-47709 In Progress

compiler/testData/diagnostics/tests/reassignment/when.fir.kt

@@ -0,0 +1,10 @@
+// !DIAGNOSTICS: -UNUSED_VALUE
+
+fun foo(f: Boolean): Int {
+    val i: Int
+    when (f) {
+        true -> i = 1
+    }
+    <!VAL_REASSIGNMENT!>i<!> = 3
+    return i
+}

compiler/testData/diagnostics/tests/reassignment/when.kt

@@ -1,11 +1,10 @@
-// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_VALUE
 
 fun foo(f: Boolean): Int {
     val i: Int
-    when (f) {
+    <!NON_EXHAUSTIVE_WHEN_STATEMENT!>when<!> (f) {
         true -> i = 1
     }
     <!VAL_REASSIGNMENT!>i<!> = 3
     return i
-}
+}