[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/symbolByPsi/outerAndInnerClasses.txt

@@ -469,7 +469,7 @@ KtFunctionSymbol:
         annotationsList: []
         type: T
     ]
-    type: X.U.X<T, T4, T3, T>
+    type: <local>/U.X<T, T4, T3, T>
   getContainingModule: KtSourceModule "Sources of main"
   deprecationStatus: null