[webview_flutter_lwe] Crash on emulator

[JSUYA]

When running the webview_flutter_lwe example on a TV emulator, the app is crashed.
Since we can't check the log in the emulator, I set use_sw_backend in webview.cc to true and ran it on a TV Device.
I checked the similar(?) crash occurred.
This issue looks have occurred after #695.

+) SingleBufferPool used in sw backed is also used in webview_flutter_tizen and works normally.

[I] flutter: WebView is loading (progress : 10%)
[I] flutter: Page started loading: https://www.google.com
[I] flutter: WebView is loading (progress : 55%)
[I] flutter: WebView is loading (progress : 69%)
[I] flutter: WebView is loading (progress : 0%)
[E] terminate called after throwing an instance of '
[E] std::bad_function_call
[E] '
[E]   what():
[E] bad_function_call
[E]
[E] DotNET onSigabrt called on org.tizen.webview_flutter_lwe_example

diff --git a/packages/webview_flutter_lwe/tizen/src/webview.cc b/packages/webview_flutter_lwe/tizen/src/webview.cc
index 7b9e7b3f..dd86212a 100644
--- a/packages/webview_flutter_lwe/tizen/src/webview.cc
+++ b/packages/webview_flutter_lwe/tizen/src/webview.cc
@@ -107,7 +107,8 @@ WebView::WebView(flutter::PluginRegistrar* registrar, int view_id,
       texture_registrar_(texture_registrar),
       width_(width),
       height_(height) {
-  use_sw_backend_ = IsRunningOnEmulator();
+  use_sw_backend_ = true;
+  IsRunningOnEmulator();
   if (use_sw_backend_) {
     tbm_pool_ = std::make_unique<SingleBufferPool>(width, height);
   } else {

[bwikbs]

This issue will be resolved in lwe 1.3.0.