[IMP] project: grey the row when the user hovers it.

Before this commit, the user could having a bit difficult to read a
row in Sales or Profitability section shown in right side panel of
project update view since there is not much space between 2 rows.
The idea is to add a color when the user hover a row to correctly see
the row that he sees.

This commit greys a row when the user hovers a row like we did for the
line in the milestone section in the right side panel.

task-2814466

Part-of: odoo/odoo#88219

addons/project/static/src/scss/project_rightpanel.scss

@@ -77,8 +77,8 @@ html .o_web_client > .o_action_manager > .o_action > .o_content > .o_controller_
 
         .o_rightpanel_data {
             font-size: small;
-            .o_rightpanel_data_row {
-                &:hover {
+            .o_rightpanel_data_row, table > tbody > tr {
+                &:not(.o_rightpanel_nohover):hover {
                     background-color: $gray-100;
                     border-radius: 5px;
                 }

addons/sale_project/static/src/right_panel/project_right_panel.xml

@@ -46,7 +46,7 @@
                                 <td align="right"><t t-esc="sale_item.qty_delivered"/> <t t-esc="uom_name"/></td>
                                 <td align="right"><t t-esc="sale_item.qty_invoiced"/> <t t-esc="uom_name"/></td>
                             </tr>
-                            <tr t-if="sale_items.total &gt; sale_items.data.length">
+                            <tr class="o_rightpanel_nohover" t-if="sale_items.total &gt; sale_items.data.length">
                                 <td>
                                     <a class="o_rightpanel_button text-bold" t-on-click="onLoadSalesOrderLinesClick">
                                         Load more