feat(twap): unlimited twap deadline

[alfetopito]

Summary

Follow up to and waterfalls into #3567

Another low hanging fruit from 2024 roadmap

TWAP orders in theory have no duration limit.
The only restriction is that each individual part can not be longer than 6 months.

This change:

1. Removes the 6 months limit for TWAP duration
2. Adds the limit for individual part duration
3. Also adds human friendly display for time in years and months (albeit not very precise...)

To Test

1. Open the app as a Safe App
2. Go to TWAP tab
3. Fill in the form and pick a custom order duration
4. Insert 9000 hours (rounding 1y up) and 2 parts

• You should be allowed to pick more than 4400 hours (rounding up 6 months)
• You should see a warning about the part time being too long
• You should not be able to place the TWAP

5. Increase the number of parts by 1

• Warnings should be gone
• You should be able to place the order

Notes

• The new year and month calculation is not very precise.
  Thus, you'll see the limit as 6 months and 12h, when in fact it's 182d + 12h
  

• The duration picker is still using hours and minutes
  I'm aware it could use some updating, but it's out of the scope of this change.

[vercel]

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[elena-zh]

Works with some issues I reported in #3591 and #3592