Plugins: Refactor plugin config into separate env var and request scoped services (#83261)

* seperate services for env + req

* merge with main

* fix tests

* undo changes to golden file

* fix linter

* remove unused fields

* split out new config struct

* provide config

* undo go mod changes

* more renaming

* fix tests

* undo bra.toml changes

* update go.work.sum

* undo changes

* trigger

* apply PR feedback

pkg/plugins/manager/pipeline/discovery/steps.go

@@ -11,7 +11,7 @@ import (
 
 // DefaultFindFunc is the default function used for the Find step of the Discovery stage. It will scan the local
 // filesystem for plugins.
-func DefaultFindFunc(cfg *config.Cfg) FindFunc {
+func DefaultFindFunc(cfg *config.PluginManagementCfg) FindFunc {
 	return finder.NewLocalFinder(cfg.DevMode, cfg.Features).Find
 }