Use request.CTX instead of *request.Context (#24877)

* Use request.CTX instead of *request.Context

* Fix tests

server/channels/app/slashcommands/command_share.go

@@ -119,7 +119,7 @@ func (sp *ShareProvider) getAutoCompleteUnInviteRemote(a *app.App, _ *model.Comm
 	}
 }
 
-func (sp *ShareProvider) DoCommand(a *app.App, c *request.Context, args *model.CommandArgs, message string) *model.CommandResponse {
+func (sp *ShareProvider) DoCommand(a *app.App, c request.CTX, args *model.CommandArgs, message string) *model.CommandResponse {
 	if !a.HasPermissionTo(args.UserId, model.PermissionManageSharedChannels) {
 		return responsef(args.T("api.command_share.permission_required", map[string]any{"Permission": "manage_shared_channels"}))
 	}