Fix KT-8608: Compiler crashes with assertion Restore stack is unavailable

- fix SAVE_STACK_BEFORE_TRY insertion:
  TRYCATCHBLOCK LA, LB, LC
  LA
    NOP
    try_body
  LB
    ...
  LC
    handler_body
should be transformed into:
  LA
    {SAVE_STACK_BEFORE_TRY}
  LA' // new TCB start label
    NOP
    try_body
  LB
    ...
  LC
    handler_body
with all TCBs start labels remapped

- properly wrap exceptions from MandatoryMethodTransformer

 #KT-8608 Fixed

compiler/testData/codegen/box/controlStructures/tryCatchInExpressions/deadTryCatch.kt

@@ -0,0 +1,26 @@
+inline fun catchAll(x: String, block: () -> Unit): String {
+    try {
+        block()
+    } catch (e: Throwable) {
+    }
+    return x
+}
+
+inline fun tryTwice(block: () -> Unit) {
+    try {
+        block()
+        try {
+            block()
+        } catch (e: Exception) {
+        }
+    } catch (e: Exception) {
+    }
+}
+
+fun box(): String {
+    return catchAll("OK") {
+        tryTwice {
+            throw Exception()
+        }
+    }
+}