[LL] take originalDeclaration when exists to detect module kind

Fixes KTIJ-24609.
When completion happens outside the content root,
module kind should be detected by the original file.
Otherwise, module would not be the same because outside the content root,
each file has its own module.
Actual #findSourceFirSymbol also does search over originalDeclaration when present.
Added FirCompletionOutsideSourceRootTest in IJ monorepo

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/state/LLFirResolvableResolveSession.kt

@@ -101,7 +101,7 @@ internal abstract class LLFirResolvableResolveSession(
         ktDeclaration: KtDeclaration,
         phase: FirResolvePhase
     ): FirBasedSymbol<*> {
-        val module = getModule(ktDeclaration)
+        val module = getModule(ktDeclaration.originalDeclaration ?: ktDeclaration)
         retryOnInvalidSession {
             return when (getModuleKind(module)) {
                 ModuleKind.RESOLVABLE_MODULE -> findSourceFirSymbol(ktDeclaration, module).also { resolveFirToPhase(it.fir, phase) }