fix: Fix renderer issue for Safari/Firefox. (#241)

* fix: Fix renderer issue for Safari.

* fix: fix compile for native.

* chore: Improve flickering.

lib/src/support/platform.dart

@@ -9,6 +9,8 @@ bool lkPlatformIs(PlatformType type) => lkPlatform() == type;
 
 bool lkPlatformIsTest() => Platform.environment.containsKey('FLUTTER_TEST');
 
+BrowserType lkBrowser() => lkBrowserImplementation();
+
 enum PlatformType {
   web,
   windows,
@@ -18,3 +20,12 @@ enum PlatformType {
   fuchsia,
   iOS,
 }
+
+enum BrowserType {
+  chrome,
+  firefox,
+  safari,
+  internetExplorer,
+  wkWebView,
+  unknown,
+}