[FE] Fix TypeParameterUpperBounds incompatibility priority

^KT-60902 Fixed
Review: https://jetbrains.team/p/kt/reviews/11039/timeline

We should prioritize to return STRONG incompatibilities over WEAK
incompatibilities. But this invariant broke in `areCompatibleCallables`,
because `areCompatibleTypeParameters` returns incompatibilities of both
types, and `areCompatibleTypeParameters` is called in WEAK
incompatibilities section.

The fix is to split `areCompatibleTypeParameters` into two functions:
`areStrongIncompatibleTypeParameters` and
`areWeakIncompatibleTypeParameters`. And call each of this function in
appropriate `areCompatibleCallables` sections.

compiler/testData/diagnostics/tests/multiplatform/kt60902.kt

@@ -0,0 +1,13 @@
+// FIR_IDENTICAL
+// MODULE: m1-common
+// FILE: common.kt
+
+public expect fun <T : Comparable<T>> Array<out T>.foo()
+
+// MODULE: m2-jvm()()(m1-common)
+// FILE: jvm.kt
+public actual fun <T : Comparable<T>> Array<out T>.foo() {
+}
+
+private fun <T> Array<out T>.foo() {
+}