message: feat(transaction-signed): refactoring & styling
diff: <ion-header no-border>
  <ion-toolbar>
  - <ion-title>
  <ion-buttons slot="start">
  <ion-back-button></ion-back-button>
  </ion-buttons>
  + <ion-title>
  {{ 'transaction-signed.title' | translate }
  </ion-title>
  </ion-toolbar>
  <airgap-qr-clipboard *ngIf="signedTx && qrType === 1" [level]="'L'" [qrdata]="signedTx" [size]="300"></airgap-qr-clipboard>
  </ion-row>
  - <ion-row class="ion-padding">
  - <ion-label>{{ 'transaction-signed.raw-tx_label' | translate }}</ion-label>
  - <ion-toggle (ionChange)="switchQR()"></ion-toggle>
  - </ion-row>
  - <ion-row class="ion-padding-bottom ion-margin-bottom">
  + <ion-item lines="none">
  + <ion-label text-wrap>{{ 'transaction-signed.raw-tx_label' | translate }}</ion-label>
  + <ion-toggle slot="end" (ionChange)="switchQR()"></ion-toggle>
  + </ion-item>
  <airgap-signed-transaction [syncProtocolString]="interactionUrl"></airgap-signed-transaction>
  - </ion-row>
  <ion-fab vertical="bottom" horizontal="end" slot="fixed">
  <ion-button color="primary" shape="round" (click)="done()">{{ 'transaction-signed.done_label' | translate }}</ion-button>
  </ion-fab>
  