Fix enum message using configuration rather than protoname in json output

src/app/editor/proto-field/proto-field.component.ts

@@ -77,7 +77,7 @@ import { StringFieldComponent } from '../string-field/string-field.component';
       <mat-select [(value)]="value">
         <mat-option>None</mat-option>
         @for(option of enumConfiguration().options; track option) {
-        <mat-option [value]="option">{{
+        <mat-option [value]="option.protoName">{{
           option.friendlyName || option.protoName
         }}</mat-option>
         }