[BUG] - Select Chain Screen Layout and Navigation Mismatch with Figma in Swap Module

[braja555]

Summary:
In the Swap module, the Select Chain screen layout differ from the Figma design. The title alignment, missing icons, and flow after selection are inconsistent with the expected design.

Steps to Reproduce:

1. On iOS, launch Vultisig (Version 1.27.17).
2. Navigate to the Swap module on the home screen.
3. Tap on any chain and open Select Chain page.
   4.Observe that:

• The “Select Chain” title is centered instead of aligned as per Figma.
• The back (X) and tick icons are missing.
  *After selecting a chain, it directly returns to the previous page instead of showing the tick mark for confirmation.
  *Compare with the Figma design for reference.

figma: https://www.figma.com/design/puB2fsVpPrBx3Sup7gaa3v/Vultisig-App?node-id=51141-192700&t=X90iMfVuy5ClhBkD-0

Select Chain Screen Layout and Navigation Mismatch with Figma in Swap Module

[braja555]

@gastonm5 - same for select assets too

[gastonm5]

@gastonm5 - same for select assets too

Sounds good, looks it was updated recently