[IMP] runbot_merge: suppress view validation warning

This is a dumb false positive, kill it.

runbot_merge/models/__init__.py

@@ -1,4 +1,5 @@
 from . import ir_actions
+from . import ir_ui_view
 from . import res_partner
 from . import project
 from . import pull_requests

runbot_merge/models/ir_ui_view.py

@@ -0,0 +1,17 @@
+from odoo import models
+
+
+class View(models.Model):
+    _inherit = 'ir.ui.view'
+
+    def _log_view_warning(self, msg, node):
+        """The view validator is dumb and triggers a warning because there's a
+        `field.btn`, even though making a `field[widget=url]` (which renders as
+        a link) look like a button is perfectly legitimate.
+
+        Suppress that warning.
+        """
+        if node.tag == 'field' and node.get('widget') == 'url' and "button/submit/reset" in msg:
+            return
+
+        super()._log_view_warning(msg, node)