[FIX] mass_mailing: filter emails to avoid duplicates
[FIX] mass_mailing: filter emails to avoid duplicates

When subscribing a user to a mailing list, the `mail.mass_mailing.contact`
created is processed to identify it's name and email from the address (method
`get_name_email` called in `add_to_list` and `name_create`).
For a better consistency, the search of existing contacts should also be done
using the method `get_name_email`.

This avoids that subscribing twice `Example <example@example.com>` fails to
detect duplicates and creates two subscriptions.

Closes #12265

Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,tvibliani/odoo,vnsofthe/odoo,ygol/odoo,ehirt/odoo,Endika/odoo,alexcuellar/odoo,diagramsoftware/odoo,NeovaHealth/odoo,Nowheresly/odoo,mustafat/odoo-1,shingonoide/odoo,eino-makitalo/odoo,eino-makitalo/odoo,Noviat/odoo,odootr/odoo,synconics/odoo,synconics/odoo,funkring/fdoo,CatsAndDogsbvba/odoo,OpenUpgrade/OpenUpgrade,glovebx/odoo,vnsofthe/odoo,Noviat/odoo,mustafat/odoo-1,storm-computers/odoo,Adel-Magebinary/odoo,laslabs/odoo,microcom/odoo,hip-odoo/odoo,Adel-Magebinary/odoo,diagramsoftware/odoo,storm-computers/odoo,ygol/odoo,bplancher/odoo,spadae22/odoo,shingonoide/odoo,CatsAndDogsbvba/odoo,odootr/odoo,NeovaHealth/odoo,Endika/odoo,leorochael/odoo,Elico-Corp/odoo_OCB,makinacorpus/odoo,ehirt/odoo,BT-ojossen/odoo,datenbetrieb/odoo,alexcuellar/odoo,glovebx/odoo,synconics/odoo,odootr/odoo,jfpla/odoo,Daniel-CA/odoo,funkring/fdoo,glovebx/odoo,jfpla/odoo,OpenUpgrade/OpenUpgrade,tvibliani/odoo,hassoon3/odoo,leorochael/odoo,OpenUpgrade/OpenUpgrade,makinacorpus/odoo,Noviat/odoo,microcom/odoo,NeovaHealth/odoo,hassoon3/odoo,Endika/odoo,hassoon3/odoo,vnsofthe/odoo,ygol/odoo,Daniel-CA/odoo,ehirt/odoo,ygol/odoo,jfpla/odoo,makinacorpus/odoo,synconics/odoo,Nowheresly/odoo,funkring/fdoo,makinacorpus/odoo,tvibliani/odoo,laslabs/odoo,Adel-Magebinary/odoo,dfang/odoo,spadae22/odoo,mustafat/odoo-1,datenbetrieb/odoo,dfang/odoo,OpenUpgrade/OpenUpgrade,leorochael/odoo,jfpla/odoo,ehirt/odoo,tvibliani/odoo,CatsAndDogsbvba/odoo,microcom/odoo,diagramsoftware/odoo,hassoon3/odoo,BT-ojossen/odoo,Adel-Magebinary/odoo,shingonoide/odoo,glovebx/odoo,bplancher/odoo,Adel-Magebinary/odoo,storm-computers/odoo,spadae22/odoo,BT-ojossen/odoo,leorochael/odoo,synconics/odoo,OpenUpgrade/OpenUpgrade,dfang/odoo,makinacorpus/odoo,hip-odoo/odoo,eino-makitalo/odoo,NeovaHealth/odoo,diagramsoftware/odoo,BT-ojossen/odoo,spadae22/odoo,alexcuellar/odoo,mustafat/odoo-1,tvibliani/odoo,CatsAndDogsbvba/odoo,makinacorpus/odoo,laslabs/odoo,mustafat/odoo-1,Noviat/odoo,odootr/odoo,hip-odoo/odoo,tvibliani/odoo,dfang/odoo,odootr/odoo,CatsAndDogsbvba/odoo,microcom/odoo,shingonoide/odoo,hip-odoo/odoo,Adel-Magebinary/odoo,storm-computers/odoo,NeovaHealth/odoo,Daniel-CA/odoo,jfpla/odoo,alexcuellar/odoo,dfang/odoo,leorochael/odoo,funkring/fdoo,diagramsoftware/odoo,hip-odoo/odoo,Endika/odoo,spadae22/odoo,alexcuellar/odoo,hassoon3/odoo,storm-computers/odoo,Noviat/odoo,Elico-Corp/odoo_OCB,eino-makitalo/odoo,CatsAndDogsbvba/odoo,CatsAndDogsbvba/odoo,bplancher/odoo,ygol/odoo,bplancher/odoo,funkring/fdoo,datenbetrieb/odoo,datenbetrieb/odoo,odootr/odoo,ygol/odoo,Daniel-CA/odoo,ehirt/odoo,microcom/odoo,datenbetrieb/odoo,tvibliani/odoo,Endika/odoo,eino-makitalo/odoo,Nowheresly/odoo,hip-odoo/odoo,glovebx/odoo,datenbetrieb/odoo,Adel-Magebinary/odoo,vnsofthe/odoo,makinacorpus/odoo,Noviat/odoo,glovebx/odoo,OpenUpgrade/OpenUpgrade,spadae22/odoo,shingonoide/odoo,diagramsoftware/odoo,Nowheresly/odoo,jfpla/odoo,OpenUpgrade/OpenUpgrade,alexcuellar/odoo,vnsofthe/odoo,vnsofthe/odoo,synconics/odoo,Elico-Corp/odoo_OCB,spadae22/odoo,mustafat/odoo-1,BT-ojossen/odoo,dfang/odoo,funkring/fdoo,NeovaHealth/odoo,Nowheresly/odoo,ygol/odoo,diagramsoftware/odoo,eino-makitalo/odoo,jfpla/odoo,eino-makitalo/odoo,leorochael/odoo,datenbetrieb/odoo,shingonoide/odoo,leorochael/odoo,bplancher/odoo,Nowheresly/odoo,NeovaHealth/odoo,laslabs/odoo,vnsofthe/odoo,BT-ojossen/odoo,funkring/fdoo,microcom/odoo,storm-computers/odoo,ehirt/odoo,Daniel-CA/odoo,mustafat/odoo-1,hassoon3/odoo,alexcuellar/odoo,Daniel-CA/odoo,bplancher/odoo,Elico-Corp/odoo_OCB,laslabs/odoo,Nowheresly/odoo,Endika/odoo,ehirt/odoo,odootr/odoo,BT-ojossen/odoo,Daniel-CA/odoo,synconics/odoo,Noviat/odoo,shingonoide/odoo,glovebx/odoo,Endika/odoo,laslabs/odoo