K2: fix handling of synthetic calls in delegate inference

This commit is intended to avoid the second resolve of delegate when
we need to consider provideDelegate() possibility in inference.
Also here we provide correct completion of synthetic calls during
delegate inference.

#KT-58013 Fixed

compiler/testData/diagnostics/tests/delegatedProperty/provideDelegate/onObject.kt

@@ -0,0 +1,10 @@
+// FIR_IDENTICAL
+class C {
+    operator fun getValue(x: Any?, y: Any?): String = ""
+}
+
+object O {
+    operator fun provideDelegate(x: Any?, y: Any?): C = C()
+}
+
+val x: String by O