[JVM_IR] Extend when to switch translation to deal with nested ors.

FIR translates:

```
when (x) {
  1, 2, 3 -> action
  else -> other_action
}
```

to an IR structure with nested ors:

```
if ((x == 1 || x == 2) || (x == 3)) action
else other_action
```

This change allows that to turn into switch instructions in the
JVM backend.

compiler/testData/codegen/bytecodeText/whenEnumOptimization/bigEnum.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 import kotlin.test.assertEquals
 
 enum class BigEnum {

compiler/testData/codegen/bytecodeText/whenEnumOptimization/duplicatingItems.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 import kotlin.test.assertEquals
 
 enum class Season {

compiler/testData/codegen/bytecodeText/whenEnumOptimization/expression.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 import kotlin.test.assertEquals
 
 enum class Season {

compiler/testData/codegen/bytecodeText/whenEnumOptimization/manyWhensWithinClass.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 package abc.foo
 
 enum class Season {

compiler/testData/codegen/bytecodeText/whenEnumOptimization/nullability.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 enum class Season {
     WINTER,
     SPRING,

compiler/testData/codegen/bytecodeText/whenEnumOptimization/whenOr.kt

@@ -0,0 +1,11 @@
+// IGNORE_BACKEND: JVM
+
+fun test(x: Int): String {
+    when {
+        x == 1 || x == 3 || x == 5 -> "135"
+        x == 2 || x == 4 || x == 6 -> "246"
+        else -> "other"
+    }
+}
+
+// 1 TABLESWITCH

compiler/testData/codegen/bytecodeText/whenEnumOptimization/withoutElse.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 import kotlin.test.assertEquals
 
 enum class Season {