V2 Wizard: Add custom file system to request customizations (HMS-3690)

The blueprint request now contains a field for the filesystem in its
customizations.

src/Components/CreateImageWizardV2/steps/FileSystem/FileSystemConfiguration.tsx

@@ -322,7 +322,7 @@ const MountpointSuffix = ({ partition }: MountpointSuffixPropTypes) => {
           })
         );
       }}
-      aria-label="text input example"
+      aria-label="mountpoint suffix"
       ouiaId="mount-suffix"
     />
   );

src/Components/CreateImageWizardV2/steps/FileSystem/FileSystemTable.tsx

@@ -160,6 +160,7 @@ const FileSystemTable = () => {
       className={isDragging ? styles.modifiers.dragOver : ''}
       aria-label="File system table"
       variant="compact"
+      data-testid="fsc-table"
     >
       <Thead>
         <Tr>