Add LightClassUtil.getLightClassMethodsByName to avoid resolving all lightClassMethods and filtration later on

Relates to #KTIJ-1069
Relates to #EA-249999

(cherry picked from commit 6331a13)

Author: vladimirdolzhenko

compiler/light-classes/src/org/jetbrains/kotlin/asJava/LightClassUtil.kt

@@ -124,13 +124,18 @@ object LightClassUtil {
         return getPsiMethodWrappers(function).toList()
     }
 
+    fun getLightClassMethodsByName(function: KtFunction, name: String): Sequence<KtLightMethod> {
+        return getPsiMethodWrappers(function, name)
+    }
+
     private fun getPsiMethodWrapper(declaration: KtDeclaration): PsiMethod? {
         return getPsiMethodWrappers(declaration).firstOrNull()
     }
 
-    private fun getPsiMethodWrappers(declaration: KtDeclaration): Sequence<KtLightMethod> =
+    private fun getPsiMethodWrappers(declaration: KtDeclaration, name: String? = null): Sequence<KtLightMethod> =
         getWrappingClasses(declaration).flatMap { it.methods.asSequence() }
             .filterIsInstance<KtLightMethod>()
+            .filter { name == null || name == it.name }
             .filter { it.kotlinOrigin === declaration || it.navigationElement === declaration }
 
     private fun getWrappingClass(declaration: KtDeclaration): PsiClass? {

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/KotlinShortNamesCache.kt

@@ -192,7 +192,7 @@ class KotlinShortNamesCache(private val project: Project) : PsiShortNamesCache()
             filter,
             KtNamedFunction::class.java
         ) { ktNamedFunction ->
-            val methods = LightClassUtil.getLightClassMethods(ktNamedFunction).filter { it.name == name }
+            val methods = LightClassUtil.getLightClassMethodsByName(ktNamedFunction, name)
             return@processElements methods.all { method ->
                 processor.process(method)
             }