Pre-package Calls v0.6.0 and enable it by default (#20388)

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

model/config_test.go

@@ -1505,11 +1505,11 @@ func TestConfigServiceSettingsIsValid(t *testing.T) {
 }
 
 func TestConfigDefaultCallsPluginState(t *testing.T) {
-	t.Run("should not enable Calls plugin by default when not in Cloud", func(t *testing.T) {
+	t.Run("should enable Calls plugin by default on self-hosted", func(t *testing.T) {
 		c1 := Config{}
 		c1.SetDefaults()
 
-		assert.Nil(t, c1.PluginSettings.PluginStates["com.mattermost.calls"])
+		assert.True(t, c1.PluginSettings.PluginStates["com.mattermost.calls"].Enable)
 	})
 
 	t.Run("should enable Calls plugin by default on Cloud", func(t *testing.T) {
@@ -1522,8 +1522,6 @@ func TestConfigDefaultCallsPluginState(t *testing.T) {
 	})
 
 	t.Run("should not re-enable Calls plugin after it has been disabled", func(t *testing.T) {
-		os.Setenv("MM_CLOUD_INSTALLATION_ID", "test")
-		defer os.Unsetenv("MM_CLOUD_INSTALLATION_ID")
 		c1 := Config{
 			PluginSettings: PluginSettings{
 				PluginStates: map[string]*PluginState{