FIR: Support safe-calls new format in body resolution

^KT-38444 In Progress

compiler/fir/analysis-tests/testData/resolve/callResolution/extensionInvokeAfterSafeCall.kt

@@ -0,0 +1,9 @@
+interface A
+
+fun test_1(a: A?, convert: A.() -> String) {
+    val s = a?.convert()
+}
+
+fun test_2(a: A, convert: A.() -> String) {
+    val s = a.convert()
+}

compiler/fir/analysis-tests/testData/resolve/callResolution/extensionInvokeAfterSafeCall.txt

@@ -0,0 +1,9 @@
+FILE: extensionInvokeAfterSafeCall.kt
+    public abstract interface A : R|kotlin/Any| {
+    }
+    public final fun test_1(a: R|A?|, convert: R|A.() -> kotlin/String|): R|kotlin/Unit| {
+        lval s: R|kotlin/String?| = R|<local>/a|?.{ R|<local>/convert|.R|FakeOverride<kotlin/Function1.invoke: R|kotlin/String|>|($subj$) }
+    }
+    public final fun test_2(a: R|A|, convert: R|A.() -> kotlin/String|): R|kotlin/Unit| {
+        lval s: R|kotlin/String| = R|<local>/convert|.R|FakeOverride<kotlin/Function1.invoke: R|kotlin/String|>|(R|<local>/a|)
+    }

compiler/fir/analysis-tests/testData/resolve/callResolution/safeCallOnTypeAlias.kt

@@ -0,0 +1,7 @@
+typealias MyTypeAlias = (() -> String?)?
+fun foo(x: MyTypeAlias) {
+
+    x?.let { y -> y()?.let { result -> bar(result) } }
+}
+
+fun bar(x: String) = x

compiler/fir/analysis-tests/testData/resolve/callResolution/safeCallOnTypeAlias.txt

@@ -0,0 +1,14 @@
+FILE: safeCallOnTypeAlias.kt
+    public final typealias MyTypeAlias = R|() -> kotlin/String?|
+    public final fun foo(x: R|MyTypeAlias|): R|kotlin/Unit| {
+        R|<local>/x|?.{ $subj$.R|kotlin/let|<R|() -> kotlin/String?|, R|kotlin/String|>(<L> = let@fun <anonymous>(y: R|() -> kotlin/String?|): R|kotlin/String| <kind=EXACTLY_ONCE>  {
+            ^ R|<local>/y|.R|FakeOverride<kotlin/Function0.invoke: R|kotlin/String?|>|()?.{ $subj$.R|kotlin/let|<R|kotlin/String|, R|kotlin/String|>(<L> = let@fun <anonymous>(result: R|kotlin/String|): R|kotlin/String| <kind=EXACTLY_ONCE>  {
+                ^ R|/bar|(R|<local>/result|)
+            }
+            ) }
+        }
+        ) }
+    }
+    public final fun bar(x: R|kotlin/String|): R|kotlin/String| {
+        ^bar R|<local>/x|
+    }