TextEditor: skip auto completion while suggestion is visible

The use can still explicitly request completions in that case via the
keyboard shortcut.

Change-Id: I4ed47232a24288c540d1357c0f876a1cdfcfec08
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/plugins/texteditor/codeassist/codeassistant.cpp

@@ -444,6 +444,7 @@ void CodeAssistantPrivate::automaticProposalTimeout()
 {
     if (isWaitingForProposal()
         || m_editorWidget->multiTextCursor().hasMultipleCursors()
+        || m_editorWidget->suggestionVisible()
         || (isDisplayingProposal() && !m_proposalWidget->isFragile())) {
         return;
     }

src/plugins/texteditor/texteditor.cpp

@@ -5952,6 +5952,11 @@ void TextEditorWidget::clearSuggestion()
     d->clearCurrentSuggestion();
 }
 
+bool TextEditorWidget::suggestionVisible() const
+{
+    return d->m_suggestionBlock.isValid();
+}
+
 #ifdef WITH_TESTS
 void TextEditorWidget::processTooltipRequest(const QTextCursor &c)
 {

src/plugins/texteditor/texteditor.h

@@ -471,6 +471,7 @@ public:
 
     void insertSuggestion(const QString &suggestion);
     void clearSuggestion();
+    bool suggestionVisible() const;
 
 #ifdef WITH_TESTS
     void processTooltipRequest(const QTextCursor &c);