[FIX] ir.qweb: invalidate cache only when active

Complements rev. 8a7af44a07

The assets cache is only active while not in "xml dev" mode,
so the cache clearing must not be done while this development
mode is active (i.e. with `--dev=xml`)

odoo/addons/base/ir/ir_qweb/assetsbundle.py

@@ -175,7 +175,8 @@ class AssetsBundle(object):
         ]
 
         # force bundle invalidation on other workers
-        self.env['ir.qweb']._get_asset.clear_cache(self.env['ir.qweb'])
+        if 'xml' not in tools.config['dev_mode']:
+            self.env['ir.qweb']._get_asset.clear_cache(self.env['ir.qweb'])
 
         return ira.sudo().search(domain).unlink()