Avoid duplicate SetContextValue call (#33564)

And fix FIXME and TODO

services/context/context.go

@@ -166,7 +166,6 @@ func Contexter() func(next http.Handler) http.Handler {
 			ctx.PageData = map[string]any{}
 			ctx.Data["PageData"] = ctx.PageData
 
-			ctx.Base.SetContextValue(WebContextKey, ctx) // FIXME: this should be removed because NewWebContext should already set it
 			ctx.Csrf = NewCSRFProtector(csrfOpts)
 
 			// get the last flash message from cookie

services/context/package.go

@@ -154,9 +154,9 @@ func PackageContexter() func(next http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
 			base := NewBaseContext(resp, req)
-			// it is still needed when rendering 500 page in a package handler
+			// FIXME: web Context is still needed when rendering 500 page in a package handler
+			// It should be refactored to use new error handling mechanisms
 			ctx := NewWebContext(base, renderer, nil)
-			ctx.SetContextValue(WebContextKey, ctx) // FIXME: this should be removed because NewWebContext should already set it
 			next.ServeHTTP(ctx.Resp, ctx.Req)
 		})
 	}

services/contexttest/context_tests.go

@@ -67,7 +67,6 @@ func MockContext(t *testing.T, reqPath string, opts ...MockContextOption) (*cont
 
 	chiCtx := chi.NewRouteContext()
 	ctx := context.NewWebContext(base, opt.Render, nil)
-	ctx.SetContextValue(context.WebContextKey, ctx) // FIXME: this should be removed because NewWebContext should already set it
 	ctx.SetContextValue(chi.RouteCtxKey, chiCtx)
 	if opt.SessionStore != nil {
 		ctx.SetContextValue(session.MockStoreContextKey, opt.SessionStore)