[FIR] Make session part of the key of declared scope cache

In the following commits, there will be a need to retrieve the scope of
  the same class from different sessions, so we need to consider the
  session as part of the key along with class symbol

compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/SupertypeUtils.kt

@@ -175,7 +175,7 @@ inline fun <reified ID : Any, reified FS : FirScope> scopeSessionKey(): ScopeSes
     return object : ScopeSessionKey<ID, FS>() {}
 }
 
-val USE_SITE = scopeSessionKey<FirClassSymbol<*>, FirTypeScope>()
+val USE_SITE = scopeSessionKey<Pair<FirSession, FirClassSymbol<*>>, FirTypeScope>()
 
 /* TODO REMOVE */
 fun createSubstitutionForScope(

compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/FirKotlinScopeProvider.kt

@@ -46,7 +46,7 @@ class FirKotlinScopeProvider(
             klass.lazyResolveToPhaseWithCallableMembers(it)
         }
 
-        return scopeSession.getOrBuild(klass.symbol, USE_SITE) {
+        return scopeSession.getOrBuild(useSiteSession to klass.symbol, USE_SITE) {
             val declaredScope = useSiteSession.declaredMemberScope(klass, memberRequiredPhase)
             val possiblyDelegatedDeclaredMemberScope = declaredMemberScopeDecorator(
                 klass,