title: Plotly Stacked Bar Chart text annotation issue
body: <p>So, I have this simplified data frame and I'm using <code>plotly.graph_objects</code> to plot a stacked bar chart with text annotations.
  I got the text as I wanted from the Salary column but I can't get the same for the Age column where the values are significantly lower. I would like these annotations to be the same size and on top of each bar.
  How can I get the text annotations to be visible for the Age column as well?</p>
  <p>Please find my code below:</p>
  <pre><code>data = {'Name':['Tom', 'Nick', 'Jack'],
          'Age':[18, 21, 19],
          'Salary':[500, 700, 900]}
  df_new=pd.DataFrame(data)
  
  fig = go.Figure(go.Bar(x = df_new[&quot;Name&quot;],
                         y = df_new[&quot;Age&quot;],name='Age',text=df_new[&quot;Age&quot;],
                         textposition='outside'))
  fig.add_bar(x = df_new[&quot;Name&quot;],
              y = df_new[&quot;Salary&quot;],name='Salary',text=df_new[&quot;Salary&quot;],
              textposition='outside')
  fig.update_layout(barmode='stack',
                    title = 'Age - Salary',
                    xaxis_title=&quot;Name&quot;,
                    yaxis_title=&quot;Age / Salary&quot;)
  </code></pre>
  <p><a href="https://i.stack.imgur.com/WQlcQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WQlcQ.png" alt="enter image description here" /></a></p>
  <p>Thanks in advance!</p>