[FE] Provide overloadability for candidates with different CR

compiler/testData/codegen/box/extensionFunctions/contextReceivers/overloading.kt

@@ -0,0 +1,21 @@
+// !LANGUAGE: +ContextReceivers
+// TARGET_BACKEND: JVM_IR
+// IGNORE_BACKEND_FIR: JVM_IR
+
+context(Int, String)
+fun foo(): String = "O"
+
+context(Int)
+fun foo(): String = "K"
+
+fun box(): String {
+    val o = with ("") {
+        with(42) {
+            foo()
+        }
+    }
+    val k = with(42) {
+        foo()
+    }
+    return o + k
+}

compiler/testData/diagnostics/tests/extensions/contextReceivers/overloading.fir.kt

@@ -0,0 +1,17 @@
+// !LANGUAGE: +ContextReceivers
+
+<!CONFLICTING_OVERLOADS!>context(Int, String)
+fun foo(): Int<!> {
+    return <!RETURN_TYPE_MISMATCH!>this<!UNRESOLVED_LABEL!>@Int<!> + 42<!>
+}
+
+<!CONFLICTING_OVERLOADS!>context(Int)
+fun foo(): Int<!> {
+    return <!RETURN_TYPE_MISMATCH!>this<!UNRESOLVED_LABEL!>@Int<!> + 42<!>
+}
+
+fun test() {
+    with(42) {
+        foo()
+    }
+}

compiler/testData/diagnostics/tests/extensions/contextReceivers/overloading.kt

@@ -0,0 +1,17 @@
+// !LANGUAGE: +ContextReceivers
+
+context(Int, String)
+fun foo(): Int {
+    return this@Int + 42
+}
+
+context(Int)
+fun foo(): Int {
+    return this@Int + 42
+}
+
+fun test() {
+    with(42) {
+        foo()
+    }
+}

compiler/testData/diagnostics/tests/extensions/contextReceivers/overloading.txt

@@ -0,0 +1,5 @@
+package
+
+public fun foo(): kotlin.Int
+public fun foo(): kotlin.Int
+public fun test(): kotlin.Unit