Add dust checker for Deposit Dai into Omen Account Alert message in Airdrop/Omen Membership/Claim modal

[pimato]

Describe the task that needs to be done
This is another issue (like #2228 , #2226) where we need the dust checker. Currently, we are not showing the Deposit Dai into Omen Account in order to do ACTION if the user has even a very tiny amount of DAI (0.00000000001 DAI).

Describe how you have considered doing it
Use a dust function in order to ignore the tiny amount of DAI to show the alert banner in the Airdrop Modal, Omen Membership and Claim modal.

Describe how do you expect to test the task resolution

• Airdrop Modal is showing the alert banner even if user has a tiny amount of DAI in the Omen Account.
• Omen Membership Modal is showing the alert banner even if user has a tiny amount of DAI in the Omen Account.
• Claim Modal is showing the alert banner even if user has a tiny amount of DAI in the Omen Account.