K2: use intersection scope override checker also in intersection scope

In more details, we use either platform override checker (if we came
from platform) or the combined intersection scope override checker
at this place. Also this commit fixes various places around
JavaOverrideChecker, allowing to apply it in intersection override
checker properly:
- don't consider return types in this place
- apply JavaOverrideChecker if at least one candidate is from Java
- compare type primitivity closer to K1 logic

#KT-62554 Fixed
Partially fixes KT-63242

compiler/testData/codegen/box/fir/primitiveDoubleJavaKotlinIntersection.kt

@@ -1,5 +1,4 @@
 // TARGET_BACKEND: JVM_IR
-// IGNORE_BACKEND_K2: JVM_IR
 // IGNORE_LIGHT_ANALYSIS
 // (Unresolved reference: B supertype in C declaration)
 // ISSUE: KT-63242