Make getLocalSymbolForExportDefault look harder for an export

Look for a symbol that has a `.localSymbol` property instead of blindly
using the first one.

Fixes #37829.

src/compiler/utilities.ts

@@ -4769,7 +4769,11 @@ namespace ts {
     }
 
     export function getLocalSymbolForExportDefault(symbol: Symbol) {
-        return isExportDefaultSymbol(symbol) ? symbol.declarations[0].localSymbol : undefined;
+        if (!isExportDefaultSymbol(symbol)) return undefined;
+        for (const decl of symbol.declarations) {
+            if (decl.localSymbol) return decl.localSymbol;
+        }
+        return undefined;
     }
 
     function isExportDefaultSymbol(symbol: Symbol): boolean {