[FIR] Do not include transitive friend dependencies in symbol provider

When flattening a dependency FirSymbolProvider, make sure transitive
dependency FirSymbolProviders are not included. This requires checking
that nested symbol provider sessions match the composite symbol provider
session when they are both source sessions.

^KT-60614 Fixed

compiler/testData/codegen/box/typealias/kt45308.ir.txt

@@ -0,0 +1,22 @@
+Module: a
+FILE fqName:a fileName:/a.kt
+  TYPEALIAS name:A visibility:public expandedType:kotlin.String
+Module: b
+FILE fqName:b fileName:/b.kt
+  FUN name:foo visibility:public modality:FINAL <> (f:kotlin.Function0<kotlin.String>) returnType:kotlin.String
+    VALUE_PARAMETER name:f index:0 type:kotlin.Function0<kotlin.String>
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun foo (f: kotlin.Function0<kotlin.String>): kotlin.String declared in b'
+        CALL 'public abstract fun invoke (): R of kotlin.Function0 declared in kotlin.Function0' type=kotlin.String origin=INVOKE
+          $this: GET_VAR 'f: kotlin.Function0<kotlin.String> declared in b.foo' type=kotlin.Function0<kotlin.String> origin=VARIABLE_AS_FUNCTION
+Module: main
+FILE fqName:<root> fileName:/c.kt
+  FUN name:box visibility:public modality:FINAL <> () returnType:kotlin.String
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun box (): kotlin.String declared in <root>'
+        CALL 'public final fun foo (f: kotlin.Function0<kotlin.String>): kotlin.String declared in b' type=kotlin.String origin=null
+          f: FUN_EXPR type=kotlin.Function0<kotlin.String> origin=LAMBDA
+            FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> () returnType:kotlin.String
+              BLOCK_BODY
+                RETURN type=kotlin.Nothing from='local final fun <anonymous> (): kotlin.String declared in <root>.box'
+                  CONST String type=kotlin.String value="OK"

compiler/testData/codegen/box/typealias/kt45308.kt

@@ -1,3 +1,5 @@
+// FIR_IDENTICAL
+// DUMP_IR
 // This test checks that unresolved typealias in an abbreviated type does not crash the compiler or result in a compilation error.
 // Apparently, there's some demand for this behavior, see KT-45308, KT-58335.