[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

compiler/fir/analysis-tests/testData/resolve/cfg/propertiesAndInitBlocks.fir.txt

@@ -18,7 +18,7 @@ FILE: propertiesAndInitBlocks.kt
         }
 
         local final class InitializerLocalClass : R|kotlin/Any| {
-            public constructor(): R|InitializerLocalClass| {
+            public constructor(): R|<local>/InitializerLocalClass| {
                 super<R|kotlin/Any|>()
             }
 
@@ -34,7 +34,7 @@ FILE: propertiesAndInitBlocks.kt
     )
         public get(): R|kotlin/Unit| {
             local final class GetterLocalClass : R|kotlin/Any| {
-                public constructor(): R|GetterLocalClass| {
+                public constructor(): R|<local>/GetterLocalClass| {
                     super<R|kotlin/Any|>()
                 }