[k2] Convert allDependsOnDependencies to FirModuleData member property

This essentially caches topological sort of dependsOn-dependencies in
FirModuleData. Caching it became more necessary after previous commits
that started to call it quite frequently in
VariableStorageImpl.getStability

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/project/structure/LLFirModuleData.kt

@@ -48,6 +48,10 @@ class LLFirModuleData private constructor(val ktModule: KtModule) : FirModuleDat
         ktModule.directDependsOnDependencies.map(::LLFirModuleData)
     }
 
+    override val allDependsOnDependencies: List<FirModuleData> by lazy(LazyThreadSafetyMode.PUBLICATION) {
+        ktModule.transitiveDependsOnDependencies.map(::LLFirModuleData)
+    }
+
     override val friendDependencies: List<FirModuleData> by lazy(LazyThreadSafetyMode.PUBLICATION) {
         ktModule.directFriendDependencies.map(::LLFirModuleData)
     }