[FIR] Properly assign <local> packages to symbols

This prevents `FirConflictsExpressionChecker.kt`
from missing conflicting local functions. It used
to due to inconsistencies in assigning `<local>`,
and this commit makes it a bit more
straightforward.

The change in KtClassTypeQualifierRenderer
prevents `FirOverrideImplementTest.testLocalClass`
from failing in `intellij`. It didn't fail for
callables, because `KtCallableSignatureRenderer`
doesn't try to render packages.

^KT-59186 Fixed

analysis/analysis-api/testData/symbols/symbolByReference/genericFromFunctionInLocalClass.txt

@@ -29,6 +29,6 @@ KtFunctionSymbol:
   getDispatchReceiver(): KtUsualClassType:
     annotationsList: []
     ownTypeArguments: []
-    type: test/Base<Outer>
+    type: <local>/Base<Outer>
   getContainingModule: KtSourceModule "Sources of main"
   deprecationStatus: null