KT-15862 Inline generic functions can unexpectedly box primitives

Previous version of the boxing/unboxing analysis treated merging boxed and non-boxed values as a hazard.
If such merged values are not used (e.g., early return + local variables reused in inlined calls),
corresponding boxing/unboxing operations still can be optimized out.

All information related to boxed value usage by instructions is moved to 'BoxedValueDescriptor'.
Introduce "tainted" (and "clean") boxed values, with the following rules:

  merge(B, B) = B, if unboxed types are compatible,
                T, otherwise

  merge(B, X) = T

  merge(T, X) = T

  where
    X is a non-boxed value,
    B is a "clean" boxed value,
    T is a "tainted" boxed value.

Postpone decision about value merge hazards until a "tainted" value is used.

compiler/testData/codegen/light-analysis/boxingOptimization/taintedValues.txt

@@ -0,0 +1,6 @@
+@kotlin.Metadata
+public final class TaintedValuesKt {
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+    public final static method getOrElse(): int
+    public final static method isNotEmpty(@org.jetbrains.annotations.NotNull p0: java.util.ArrayList): boolean
+}

compiler/testData/codegen/light-analysis/boxingOptimization/taintedValuesBox.txt

@@ -0,0 +1,9 @@
+@kotlin.Metadata
+public final class TaintedValuesBoxKt {
+    public final static field SIZE: int
+    private final static @org.jetbrains.annotations.NotNull field arr: int[]
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+    public final static @org.jetbrains.annotations.NotNull method getArr(): int[]
+    public final static method put(p0: java.lang.Object, p1: int, @org.jetbrains.annotations.NotNull p2: kotlin.jvm.functions.Function1, @org.jetbrains.annotations.NotNull p3: kotlin.jvm.functions.Function2, @org.jetbrains.annotations.NotNull p4: kotlin.jvm.functions.Function1, @org.jetbrains.annotations.NotNull p5: kotlin.jvm.functions.Function2): boolean
+    public final static method putNonNegInt(p0: int): boolean
+}