KJS IR: Fix KT-45738 - Consider recursive checkForPrimitiveOrPattern

Recursive results from checkForPrimitiveOrPattern were ignored. If it found a case/condition that could not be optimized the resulting "false" was not propagated. This would lead to a "optimized" when without all conditions.
- see KT-45738
- The return is now lifted out of the when to make it more obvious what is going on.
- New test for mixed multiple conditions in when

compiler/testData/codegen/box/when/switchOptimizationMultipleMixedConditions.kt

@@ -0,0 +1,21 @@
+private fun parse(text: String) = when (text) {
+    Numbers.One.name, "one", "1" -> 1
+    Numbers.Two.name, "two", "2" -> 2
+    else -> -1
+}
+
+enum class Numbers {
+    One,
+    Two,
+}
+
+fun box(): String {
+
+    val oneParsed = parse("one")
+    if (oneParsed != 1) return "'one' should map to '1' but was $oneParsed"
+
+    val OneParsed = parse("One")
+    if (OneParsed != 1) return "'One' should map to '1' but was $OneParsed"
+
+    return "OK"
+}