Hide motion preamble in final state

If a motion is in final state, the preamble does not get shown in detail
view and pdf

client/src/app/site/motions/models/view-motion.ts

@@ -142,6 +142,10 @@ export class ViewMotion extends BaseViewModelWithAgendaItemAndListOfSpeakers<Mot
         return this.speakerAmount > 0;
     }
 
+    public get showPreamble(): boolean {
+        return !this.state?.isFinalState ?? true;
+    }
+
     /**
      * Translate the state's css class into a color
      *

client/src/app/site/motions/modules/motion-detail/components/motion-detail-diff/motion-detail-diff.component.html

@@ -40,7 +40,7 @@
     <div *ngIf="changes.length === 0" class="no-changes">{{ 'No change recommendations yet' | translate }}</div>
 </section>
 
-<span class="text-prefix-label">{{ preamble | translate }}</span>
+<span class="text-prefix-label" *ngIf="showPreamble">{{ preamble | translate }}</span>
 
 <!-- The actual diff view -->
 <div class="motion-text-with-diffs">

client/src/app/site/motions/modules/motion-detail/components/motion-detail-diff/motion-detail-diff.component.ts

@@ -85,6 +85,10 @@ export class MotionDetailDiffComponent extends BaseViewComponent implements Afte
 
     public preamble: string;
 
+    public get showPreamble(): boolean {
+        return this.motion.showPreamble;
+    }
+
     /**
      * @param title
      * @param translate

client/src/app/site/motions/modules/motion-detail/components/motion-detail/motion-detail.component.html

@@ -667,7 +667,7 @@
         </div>
 
         <!-- Text (hide preamble, if diff mode. The preample is included in the motion-detail-diff component) -->
-        <span *ngIf="!isRecoMode(ChangeRecoMode.Diff)" class="text-prefix-label">{{ preamble | translate }}</span>
+        <span *ngIf="showPreamble && !isRecoMode(ChangeRecoMode.Diff)" class="text-prefix-label">{{ preamble | translate }}</span>
 
         <!-- Regular motions or traditional amendments -->
         <ng-container *ngIf="!editMotion && !motion.isStatuteAmendment() && !motion.isParagraphBasedAmendment()">

client/src/app/site/motions/modules/motion-detail/components/motion-detail/motion-detail.component.ts

@@ -167,6 +167,10 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit,
         );
     }
 
+    public get showPreamble(): boolean {
+        return this.motion.showPreamble;
+    }
+
     /**
      * Saves the target motion. Accessed via the getter and setter.
      */

client/src/app/site/motions/services/motion-pdf.service.ts

@@ -132,8 +132,10 @@ export class MotionPdfService {
         }
 
         if (!contentToExport || contentToExport.includes('text')) {
+            if (motion.showPreamble) {
                 const preamble = this.createPreamble(motion);
                 motionPdfContent.push(preamble);
+            }
             const text = this.createText(motion, lineLength, lnMode, crMode);
             motionPdfContent.push(text);
         }