fix: Restore dialog size when going back from verification to word list

When clicking "Back" in the verification step (Step 2) to return to
the word list display (Step 1), restore the original dialog size.

Issue: Step 2 reduces minimum size to 460x280 for compact verification
form, but setupStep1() didn't restore the original 550x360 size, causing
the dialog to remain small when returning to the larger word list view.

Fix:
- Restore minimum size to 550x360 in setupStep1()
- Resize to m_defaultSize when returning from Step 2
- Keep adjustSize() only for initial setup

This ensures a consistent dialog size throughout the user flow.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: 2 people

src/qt/mnemonicverificationdialog.cpp

@@ -112,8 +112,16 @@ void MnemonicVerificationDialog::setupStep1()
     ui->writtenDownCheckbox->setChecked(false);
     m_mnemonic_revealed = false;
     ui->buttonBox->hide();
-    // Compact to content
-    adjustSize();
+    // Restore original minimum size (in case we came back from Step 2)
+    setMinimumSize(QSize(550, 360));
+
+    // Restore to default size if we have it (when coming back from Step 2)
+    if (m_defaultSize.isValid() && !m_defaultSize.isEmpty()) {
+        resize(m_defaultSize);
+    } else {
+        // Compact to content on first load
+        adjustSize();
+    }
 
     // Set warning and instruction text with themed colors
     // Font sizes and weights are defined in general.css