FIR IDE: use KtVariableWithInvokeFunctionCall for extension invoke

analysis/analysis-api/testData/analysisSession/resolveCall/variableAsFunctionLikeCall.kt

@@ -1,5 +1,5 @@
 operator fun Int.invoke(): String {}
 
-fun call(x: kotlin.int) {
+fun call(x: kotlin.Int) {
     <expr>x()</expr>
 }

analysis/analysis-api/testData/analysisSession/resolveCall/variableAsFunctionLikeCall.txt

@@ -1,4 +1,5 @@
-KtFunctionCall:
+KtVariableWithInvokeFunctionCall:
+target = x: kotlin.Int
 argumentMapping = {  }
 targetFunction = /invoke(<extension receiver>: kotlin.Int): kotlin.String
 substitutor = <empty substitutor>

analysis/analysis-api/testData/analysisSession/resolveCall/variableWithExtensionInvoke.kt

@@ -0,0 +1,7 @@
+interface Foo
+
+operator fun <T> Foo.invoke(t: T) {}
+
+fun test(f: Foo) {
+    <expr>f("")</expr>
+}

analysis/analysis-api/testData/analysisSession/resolveCall/variableWithExtensionInvoke.txt

@@ -0,0 +1,5 @@
+KtVariableWithInvokeFunctionCall:
+target = f: Foo
+argumentMapping = { "" -> (t: kotlin.String) }
+targetFunction = /invoke(<extension receiver>: Foo, t: kotlin.String): kotlin.Unit
+substitutor = <map substitutor: {FirTypeParameterSymbol T=kotlin/String}>