retry original payment dialog uses unstyled material dialogs #1544

Observed

On Payment Pending, both steps of Retry original payment (the fee entry and the approval) render as a plain Material3 dialog that does not look like the rest of Bitkit:

• the title is body-size text;
• the fiat line ($ 1.63) is squeezed between the raw recipient address and the amount;
• the fee field shows a bare number (1) with no label or sat/vB unit;
• the outlined Cancel button and the dialog surface don't match the app's dialogs.

Seen on regtest at master + ldk-node rc.76 (#1532) after a broadcast timed out.

Expected

The retry flow uses the app's dialog or sheet components and typography: a title style, the amount block as on Send review, and a labelled fee field with its unit.

Steps to reproduce

1. Make an on-chain send whose broadcast times out (for example, block Electrum traffic mid-send), so Payment Pending shows "Retry original payment".
2. Tap Retry original payment. The fee step appears.
3. Enter a fee rate and Continue. The approval step appears.

Root cause

SendPendingScreen.kt:178 (RecoveryApproval.Fee) and :239 (RecoveryFeeDialog) use androidx.compose.material3.AlertDialog directly with BodyM titles. The Warning step in the same file (:200) already uses the app's AppAlertDialog. The dialog came in with #1384, so it ships in 3.0.0.

Suggested fix

Use the app's dialog scaffold, or a bottom sheet like the Send flow, for both steps. Show the amount with the shared amount component, and give the fee field a label and sat/vB suffix. docs/screens-map.md maps SendPendingScreen.kt only to "Send (Edge cases) › Transaction pending Lightning", and no frame covers the retry steps, so design input is needed.

Platform parity

iOS uses native .alert for the same steps (SendPendingScreen.swift:134, :154), so it is not affected the same way.