Removing all FakeApp usages (#14174)

* Removing some other fake apps

* More FakeApp removed

* Removing entirely FakeApp

* Fixing some tests

* Fixing get Cluster id from get plugin status

* Fixing failing tests

* Fixing tests

* Fixing test initialization for web

* Fixing InitServer for server tests

* Fixing InitServer for server tests

* Reverting go.sum and go.mod

* Removing unneded HTMLTemplates function in App layer

* Moving back some functions to its old place to easy the review

* Moving back some functions to its old place to easy the review

* Using the last struct2interface version

* Generating store layers

* Fixing merge problems

* Addressing PR comments

* Small fix

* Fixing app tests build

* Fixing tests

* fixing tests

* Fix tests

* Fixing tests

* Fixing tests

* Fixing tests

* Moving license to server struct

* Adding some fixes to the test compilation

* Fixing cluster and some jobs initialization

* Fixing some license tests compilation problems

* Fixing recursive cache invalidation

* Regenerating app layers

* Fix test compilation

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

app/plugin_api.go

@@ -117,7 +117,7 @@ func (api *PluginAPI) GetBundlePath() (string, error) {
 }
 
 func (api *PluginAPI) GetLicense() *model.License {
-	return api.app.License()
+	return api.app.Srv().License()
 }
 
 func (api *PluginAPI) GetServerVersion() string {
@@ -125,7 +125,7 @@ func (api *PluginAPI) GetServerVersion() string {
 }
 
 func (api *PluginAPI) GetSystemInstallDate() (int64, *model.AppError) {
-	return api.app.getSystemInstallDate()
+	return api.app.Srv().getSystemInstallDate()
 }
 
 func (api *PluginAPI) GetDiagnosticId() string {