Replacing require.nil in web package (#16954)

* Replacing require.nil in web package

* Fixing tests

* Address PR review comments

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

web/web_test.go

@@ -211,7 +211,7 @@ func TestStaticFilesRequest(t *testing.T) {
 
 	// Activate the plugin
 	manifest, activated, reterr := th.App.GetPluginsEnvironment().Activate(pluginID)
-	require.Nil(t, reterr)
+	require.NoError(t, reterr)
 	require.NotNil(t, manifest)
 	require.True(t, activated)
 
@@ -306,7 +306,7 @@ func TestPublicFilesRequest(t *testing.T) {
 	assert.NoError(t, htmlFileErr)
 
 	manifest, activated, reterr := env.Activate(pluginID)
-	require.Nil(t, reterr)
+	require.NoError(t, reterr)
 	require.NotNil(t, manifest)
 	require.True(t, activated)