Restore trailing newlines stripped from six modal templates

The accessibility edits dropped the final newline from six form templates.
Add it back so these files end with a newline again (POSIX text-file
convention; keeps diffs clean and avoids no-newline lint noise).

src/app/cln/transactions/invoices/create-invoice-modal/create-invoice.component.html

@@ -53,4 +53,4 @@
       </form>
     </mat-card-content>
   </div>
-</div>
+</div>

src/app/lnd/on-chain/on-chain-send-modal/on-chain-send-modal.component.html

@@ -146,4 +146,4 @@
       <button mat-button color="primary" type="button" default [mat-dialog-close]="false">{{flgValidated ? 'Close' : 'Cancel'}}</button>
     </div>
   </div>
-</ng-template>
+</ng-template>

src/app/lnd/peers-channels/channels/bump-fee-modal/bump-fee.component.html

@@ -67,4 +67,4 @@
       </form>
     </mat-card-content>
   </div>
-</div>
+</div>

src/app/lnd/peers-channels/channels/close-channel-modal/close-channel.component.html

@@ -71,4 +71,4 @@
       </form>
     </mat-card-content>
   </div>
-</div>
+</div>

src/app/lnd/peers-channels/channels/open-channel-modal/open-channel.component.html

@@ -123,4 +123,4 @@
       </div>
     </div>
   </mat-expansion-panel>
-</ng-template>
+</ng-template>

src/app/lnd/transactions/create-invoice-modal/create-invoice.component.html

@@ -57,4 +57,4 @@
       </form>
     </mat-card-content>
   </div>
-</div>
+</div>