[JVM] Fix shrinking of local range for dead variables.

Coroutine transform would occasionally *extend* the range of a
local instead of shrinking it (if the next suspension point
is after the end point for the local). That leads to the local
variable table having a local that covers code where it is not
defined. That is invalid and leads to D8 removing the locals
table from the code.

compiler/testData/codegen/box/coroutines/intLikeVarSpilling/unusedCatchVar.kt

@@ -0,0 +1,23 @@
+// WITH_RUNTIME
+// WITH_COROUTINES
+// FULL_RUNTIME
+// KJS_WITH_FULL_RUNTIME
+
+class JarFile {
+    fun entries() = listOf<String>()
+}
+
+private fun scriptTemplatesDiscoverySequence(): Sequence<String> {
+    return sequence<String> {
+        yield("OK")
+        for (dep in listOf<String>()) {
+            try {
+            } catch (e: Throwable) {
+            }
+        }
+    }
+}
+
+fun box(): String {
+    return scriptTemplatesDiscoverySequence().first()
+}