Multichain safes can be partially pinned

[jmealy]

Bug description

It is possible to have some safes in a multichain group pinned and saved locally, while other safes in the same group are not. The whole group is displayed as pinned so this leads to confusing behaviour where is you switch to a different signer wallet, some of the safes will disappear from the group.

Environment

• Browser: Chrome
• Wallet: MetaMask
• Chain: any

Steps to reproduce

1. Take a deployed single network safe and add another network to it. A CF safe will be added to the group and the group will be pinned by default.
2. Switch to another signer wallet. The original deployed safe will disappear and you are left with a single CF safe.
3. Switch back to the original wallet. The two safes will be shown in a group as before.
4. On the original wallet, unpin and pin again the group. Now the safe group behaves as expected when switching signers.

Expected result

Pinned safe groups should not change when switching signer.

Obtained result

Some safes dissapear from the group.