Fix class name to not embed all packages

We want the symbol for a class to be package/package/Class#, instead
this gave us `package/package/Class`#.

Now we have just Class#, packages will be added back in a future
commit.

The display name should just be the simple class name.

Still 23 failing tests.

Author: nicolas-guichard

semanticdb-kotlinc/src/main/kotlin/com/sourcegraph/semanticdb_kotlinc/SemanticdbTextDocumentBuilder.kt

@@ -199,7 +199,7 @@ class SemanticdbTextDocumentBuilder(
         @OptIn(SymbolInternals::class)
         private fun displayName(firBasedSymbol: FirBasedSymbol<*>): String =
             when (firBasedSymbol) {
-                is FirClassSymbol -> firBasedSymbol.classId.asSingleFqName().asString()
+                is FirClassSymbol -> firBasedSymbol.classId.shortClassName.asString()
                 is FirPropertyAccessorSymbol -> firBasedSymbol.fir.propertySymbol.name.asString()
                 is FirFunctionSymbol -> firBasedSymbol.callableId.callableName.asString()
                 is FirPropertySymbol -> firBasedSymbol.callableId.callableName.asString()

semanticdb-kotlinc/src/main/kotlin/com/sourcegraph/semanticdb_kotlinc/SymbolsCache.kt

@@ -139,7 +139,7 @@ class GlobalSymbolsCache(testing: Boolean = false) : Iterable<Symbol> {
     private fun semanticdbDescriptor(symbol: FirBasedSymbol<*>): SemanticdbSymbolDescriptor {
         return when {
             symbol is FirClassLikeSymbol ->
-                SemanticdbSymbolDescriptor(Kind.TYPE, symbol.classId.asString())
+                SemanticdbSymbolDescriptor(Kind.TYPE, symbol.classId.shortClassName.asString())
             symbol is FirPropertyAccessorSymbol &&
                 symbol.fir.nameOrSpecialName.asStringStripSpecialMarkers().startsWith("set") ->
                 SemanticdbSymbolDescriptor(