Let the link preview be dismissed back to the reply plate

Quoting a message and then typing a link left the plate stuck on the web page:
neither Escape, nor the cross, nor "Remove preview" could get rid of it.

setTopInfo({type: 'webpage'}) only repaints the plate - helperType stays
'reply' - so onHelperCancel restores the previous helper by calling
helperFunc(). But willSendWebPage was dropped only AFTER that call, and
setTopInfo bails out early on `willSendWebPage && type === 'reply'`, so the
reply was never repainted: the plate kept showing a preview that was already
gone from the state. setCurrentHover got an undefined element along the way,
which also killed the hover menu holding "Remove preview" - hence "stuck".

Drop willSendWebPage before restoring the helper; lastUrl / noWebPage are
still restored afterwards, since setTopInfo's clearHelper resets them.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: morethanwords

src/components/chat/input.ts

@@ -3988,19 +3988,20 @@ export default class ChatInput {
 
     if(this.willSendWebPage) {
       const lastUrl = this.lastUrl;
-      let needReturn = false;
-      if(this.helperType) {
-        // if(this.helperFunc) {
-        await this.helperFunc();
-        // }
+      const needReturn = !!this.helperType;
+
+      // * has to be dropped BEFORE restoring the previous helper, otherwise
+      // * setTopInfo would ignore it and the preview would stay in the plate
+      this.willSendWebPage = null;
 
-        needReturn = true;
+      if(needReturn) {
+        await this.helperFunc();
+        this.willSendWebPage = null; // * in case a new one has been fetched meanwhile
       }
 
       // * restore values
       this.lastUrl = lastUrl;
       this.noWebPage = true;
-      this.willSendWebPage = null;
 
       if(needReturn) return;
     }