Delete assertion on receiver presence in 'invoke'

#KT-6541 Fixed
 #KT-7383 Fixed

compiler/testData/diagnostics/tests/functionLiterals/kt6541_extensionForExtensionFunction.kt

@@ -0,0 +1,10 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+interface Foo
+fun (Foo.() -> Unit).invoke(b : Foo.() -> Unit)  {}
+
+object Z {
+    fun add(b : Foo.() -> Unit) : Z = Z
+}
+
+val t2 = Z add <!TYPE_MISMATCH!>{ } <!TOO_MANY_ARGUMENTS!>{ }<!><!>

compiler/testData/diagnostics/tests/functionLiterals/kt6541_extensionForExtensionFunction.txt

@@ -0,0 +1,18 @@
+package
+
+internal val t2: Z
+internal fun (Foo.() -> kotlin.Unit).invoke(/*0*/ b: Foo.() -> kotlin.Unit): kotlin.Unit
+
+internal interface Foo {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+internal object Z {
+    private constructor Z()
+    internal final fun add(/*0*/ b: Foo.() -> kotlin.Unit): Z
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/tests/functionLiterals/kt7383_starProjectedFunction.kt

@@ -0,0 +1,6 @@
+// KT-7383 Assertion failed when a star-projection of function type is used
+
+fun foo() {
+    val f : Function1<*, *> = { x -> x.toString() }
+    <!FUNCTION_EXPECTED, UNUSED_EXPRESSION!>f<!>(1)
+}

compiler/testData/diagnostics/tests/functionLiterals/kt7383_starProjectedFunction.txt

@@ -0,0 +1,3 @@
+package
+
+internal fun foo(): kotlin.Unit