share widget: fixed crash when a text content is shared without `text` in data: sometimes, text content is shared via a path and not directly the `text` key. This is the case with vCards. This patch fixes share widget to handle this case.

[DEFAULT]
bridge = pb
log_level = debug
log_fmt = #[%%(levelname)s][%%(name)s] %%(message)s

[cagou]
no_certificate_validation = true
log_level = debug
log_fmt = [%%(levelname)s][%%(name)s] %%(message)s