fix: updated bottomsheet for walletregistry app

[smgv]

Motivation and Context

Jira Link:

Description

In this PR, I have updated the ConnectWalletQRCode handling for wallet links. The component is no longer rendered when the walletRegistry app list is empty. Additionally, we now validate platform-specific keys—browser for desktop and ios/android for mobile—to ensure the correct platforms are available.

We also disabled the back button when the bottom sheet is opened.

How has this been tested?

Screenshots (if appropriate):

Screen.Recording.2026-01-27.at.5.53.42.PM.mov

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project. (run lint)
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My code requires a db migration.

---

Note

Refines wallet connection UX and bottom sheet behavior.

• ConnectWalletQrCode now shows the "Get wallet" CTA only when wallet registry has platform-appropriate links (desktop: browser/chrome/firefox/edge, mobile: ios/android); requires and uses platform prop passed from Root and ConnectWallet
• ConnectWalletHeader API updated: adds hideBackButton; back button respects disableBackButton (disabled state and click ignored); ConnectWallet computes hideBackButton and forwards disableBackButton from Root (disabled when installLinks or multiChainSelector sheets are open)
• BottomSheet backdrop click now stops event propagation before closing to avoid accidental parent handlers

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Project	Deployment	Review	Updated (UTC)
web3auth-web	Ready	Preview, Comment	Jan 27, 2026 3:32pm

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

[arch1995]

lgtm

The merge-base changed after approval.