Fix hover on namespaced function

lib/LanguageServerHover/Handler/HoverHandler.php

@@ -175,7 +175,7 @@ private function renderMember(SymbolContext $symbolContext): string
 
     private function renderFunction(SymbolContext $symbolContext): string
     {
-        $name = $symbolContext->symbol()->name();
+        $name = $symbolContext->name();
         $function = $this->reflector->reflectFunction($name);
 
         return $this->renderer->render(new HoverInformation($name, $function->docblock()->formatted(), $function));

tests/LanguageServerCompletion/Unit/Handler/HoverHandlerTest.php

@@ -16,7 +16,7 @@ class HoverHandlerTest extends IntegrationTestCase
     /**
      * @dataProvider provideHover
      */
-    public function testHover(string $test)
+    public function testHover(string $test): void
     {
         [ $text, $offset ] = ExtractOffset::fromSource($test);
 
@@ -82,7 +82,14 @@ private function f<>oo():string {}
 
         yield 'class' => [
             '<?php cl<>ass A { } }',
-            'A'
+        ];
+
+        yield 'function' => [
+            '<?php function foo() {} f<>oo();',
+        ];
+
+        yield 'namespaced function' => [
+            '<?php namespace Barf {function foo() {}} Barf\f<>oo();',
         ];
     }
 }