Fixed pasting links in koenig basic html input (#16584)

refs https://github.com/TryGhost/Team/issues/2680

When selecting a portion of text in KoenigBasicHtmlInput (caption input
for images, newsletter footer text input, new signup notice), and then
pasting a link, some funky things happen:
- Part of the text disappears
- The wrong part of the text is linked

The cause of this is that `KoenigBasicHtmlInput` deletes the selected
text range when pasting, even when pasting a link. so moving that part
below the code that detected a valid link, fixes the issue.

This also adds an option to not close an old style modal when pressing
the enter key (e.g. pressing enter when entering a link causes the modal
to close).

ghost/admin/app/components/modal-base.js

@@ -7,6 +7,7 @@ export default Component.extend({
     classNames: 'modal-content',
 
     _previousKeymasterScope: null,
+    closeOnEnter: true,
 
     // Allowed Actions
     closeModal: () => {},
@@ -38,9 +39,11 @@ export default Component.extend({
 
         this._previousKeymasterScope = key.getScope();
 
-        key('enter', 'modal', () => {
-            this.send('confirm');
-        });
+        if (this.closeOnEnter) {
+            key('enter', 'modal', () => {
+                this.send('confirm');
+            });
+        }
 
         key('escape', 'modal', (event) => {
             if (!event.target.dataset.preventEscapeCloseModal) {

ghost/admin/app/components/modal-portal-settings.js

@@ -28,6 +28,7 @@ export default ModalComponent.extend({
     changedTiers: null,
     openSection: null,
     portalPreviewGuid: 'modal-portal-settings',
+    closeOnEnter: false,
 
     confirm() {},
 

ghost/admin/lib/koenig-editor/addon/components/koenig-basic-html-input.js

@@ -315,10 +315,6 @@ export default class KoenigBasicHtmlInput extends Component {
             return;
         }
 
-        if (!range.isCollapsed) {
-            editor.performDelete();
-        }
-
         if (editor.post.isBlank) {
             editor._insertEmptyMarkupSectionAtCursor();
         }
@@ -337,6 +333,10 @@ export default class KoenigBasicHtmlInput extends Component {
             }
         }
 
+        if (!range.isCollapsed) {
+            editor.performDelete();
+        }
+
         const position = editor.range.head;
         const targetFormat = event.shiftKey ? 'text' : 'html';
         const pastedPost = parsePostFromPaste(event, editor, {targetFormat});